Here's the latest hybrids for fast_4sho and psonefreak. If anyone else is interested in these hybrids and rare cars, feel free to download them. They are for anyone interested.
Also included with the above hybrids are the FTO LM edition and del Sol LM edition, both in two colors. I've also included the Honda (not Acura) Integra Type R 98 spec in silver, too. (If you have the NTSC version of the game, you need a GS to unlock it.)
For the 300ZX/SilEighty with fully modded R34 compnents, the total horsepower rating is 778hp, instead of 774. I'm not sure why, but I don't think you'll mind the slight upgrade...
I was able to make one of SilEighty's black; I [R]-modified the car, so that's as close to black as you will get (hope you don't mind the red stripes). I didn't think about the racing modification, so you learn something new about the game every day. Either that, or you catch your mistakes.
With the above exception, there are no other modifcations to the car. You will have to add your own suspension, tires, driveshafts, differentials, flywheels, clutches, brakes, balance controllers, weight reductions, and racing modifications (did I miss anything?) to your new cars. Again, do not add parts to the car that will "increase" horsepower, you will lose the hybrid parts.
Change the car's settings, then exit, and then re-enter the race to start. It's a pain, but that's how hybrids work. Or you can just run the car without any changes of its settings.