Hey, if folks want ideas for the 650PP race, I have one right here - an RM'ed 1970 Dodge Challenger. I have owned the game for about five days, and this seasonal series was one of my first set of races (I do agree with the above posters about it being too easy to rack up money - having had the XP level door slammed in my face in the regular races, I was shocked when I finished 2nd at Trial Mountain, in my first attempt, and got 200,000 credits and went up 5 XP levels in one race

). I bought the Challenger simply because I love it, and decided to tune it to the max and give it a go
First attempt with 638hp roughly/605PP (every mod bar the supercharger) and racing soft tyres - snatched 3rd with a few corners to go. Leading Chapparel 2J was over 30s+ clear, so impossible

Reminds me of the old Historic Cup from way back in GT2, where a 300hp limit didn't stop a Ford GT40 occasionally entering and owning the entire field
Second attempt, same power but with modded downforce - more comfortable 3rd, but still 14s down on the lead 2 cars
Third attempt, with supercharger on - power up to 772hp 👍 This time, pretty easy. Passed the two lead cars on lap 4 and cruised to victory. The two lead cars were the Nissan GTR LM Race Car (I think) and the Ford GT LM (the gulf blue variant).
I would say, with a bit of tuning and testing of tyre choices etc (perhaps going to racing hard or medium), a really good close race is achievable here. As long as the 2J doesn't turn up 👎 The big Challenger is fun to drive, and doesn't handle as terribly as you think - turn in is good, and though it isn't nimble and will understeer if you launch it in too hard into a corner, I got it purring nicely around the track. Snap oversteer when powering down off corners is a problem though, so watch out, the big Dodge can bite

Daft biker, you wanted a car that didn't handle like it was on rails - here might be your car?
Just an idea I thought I'd share.