I'm currentl working on my motor (SB motor). All I have to do is give it to my dad and have him solder it together for me. I'm trying to figure out which pinion I should use? I want my car to reach top speed in 10-15 feet, but not lose alot of speed. I'm also looking for an extra vette body. Any one know of where I can get one, or the product number for one form RS? (I'd preferr the RS product number if possible)