I'd be lucky to have 1/2 of either those HP numbers, but it got me thinking about how so many have such high HP but then fight traction. I am hoping to make progress on the car next week. Off for 10 days. I did get a set of 17/32 spur gears for the quickchange. I don't know the ring and pinion ratio yet, but most are 4.12, 4.57 or 4.86 with 4.86 being most common. This set would give me between 2.19 and 2.58:1 depending on R&P.