Turning the RM into the ZL1 is seriously flawed logic
Detuning a formula gt and adding ballast doesnt turn it into an Ariel Atom
the RM is a race car and even detuned it will still drive circles around a ZL1. plus it has rear downforce that the ZL1 doesnt which will impact handling more than anything
Your best bet is to use the SS '10 instead, and put a stickier tire up front to duplicate the effect of the ZL1's front splitter
Here's a pic of ZL1
This is from a article in High Performance magazine:Inside The 580HP Camaro ZL1
Aerodynamics
The '12 ZL1 is one of the first GM cars designed to create downforce, or negative lift. To accomplish this impressive feat, the ZL1 team spent around 100 hours testing at the General Motors Aero Lab (GMAL) wind tunnel, using Computational Fluid Dynamics. The team leaned on GM's Lead Development Aerodynamics Engineer, Tom Froling, as this retired F-16 pilot and aero expert played a big role in helping to form the ZL1's body. However, the initial goal for ZL1 wasn't a full-on aero package; it was to eliminate the Camaro's tendency to lift at high speed.
"The SS was styled to be beautiful, but the car's shape came at the expense of lots of front lift," Roma reveals. "But, that's not much of a problem for a car limited to 155 mph. As you go faster than 150, forces and lift go up exponentially. We knew that with the ZL1's additional power, it would spend more time at high speed. So we decided early on to add a front splitter, as we wanted a more aggressive front anyway." The splitter not only took care of the lift problem, it also added an aggressive look to the front end. A unique rear spoiler was added, and then the team was faced with the most difficult component of the aero project: the hood extractor. True to its name, the extractor provided cooling airflow, and also assisted in reducing front lift. But just when Tony and his team designed the perfect extractor for aero-world, the real world called. "Once we designed a great extractor, we looked at it and thought, "Wait…this thing has to sit out in the rain! And we knew that if the driver wasn't careful, this extractor was going to get everything in the engine bay wet." It took some effort, but eventually a water trough was created to work with the extractor.
"It was then that we thought, 'If we keep going, we can make some downforce,'" Roma says. So several sizes and shapes of rocker moldings were tried before they found the right one. Front wheelwell extensions were put in as functional styling elements, as they gently move air around the tires at speed, and also assist with brake cooling. The team played with varying sizes and numbers of slats for the upper and lower grille. And a rear diffuser that utilized wraparound elements was chosen.
Roma is quick to note how beneficial Froling's airflow expertise was to the ZL1 project.
"Tom made a huge impact on [the] ZL1. As an example, he really pushed the idea of a belly pan. We weren't sure, as you have to be very careful to not choke off airflow paths from the engine, and if it's done wrong they can inadvertently bake things like starters. "But we made one, and it turned out to be a win-win. The pan funnels air over the driveline, and directs air up to the rear trans mount, which made it run cooler. We ended up in a better place because of guys like Tom." The end result is a ZL1 that produces 65 pounds of downforce at an equivalent 150 mph--compared to 200 pounds of lift in a Camaro SS. And that downforce translates into lower lap times, too. And while top-speed stability is great, these aero pieces also enhance handling and braking when the driver is actually obeying posted speed limits. "The closer you get to zero lift, the less the body moves--even at 70 or 80 mph on the highway, the ZL1 feels more stable," Tony says. "It is less sensitive to forces like crosswinds, too. In the end, it's all about being a driver's car, and giving you that confidence."
Read more:
http://www.gmhightechperformance.co...e_580hp_camaro_zl1/viewall.html#ixzz29nT8m4Bl
This is what I found.