Results are in (for the most part), go see how everyone did that participated. Had a small turnout, but bigger than the first challenge. Check it out here.
I decided to challenge myself tonight and build a Nissan Silvia/180SX with less than 250PS that could drift nicely - and it had to use the smallest displacement engine possible. After about 5 minutes of tuning and 30 minutes of practicing, here is the tune and CA Attack I came up with. The course I tested on was Happogahara Downhill because of it actually having both downhill and uphill corners.