i need some help building a bike engined legends race car http://www.littleracecars.com/ Based on the early 1930-1940 nascar's they are scaled down version built for all kinds of racing. i plan to build one for hillclimbs/sprints in the uk the measurements are basically as follows.... the height should be 46'' and the wheelbase 73'' width must not exceed 60'' and it should role freely through a opening 60'' wide by 48'' high ... wheel are 13x7 overall length is 106'' (i think) including nerf bars. the shock should measure no more than 10'' here this basic chassis layout and i was just wondering if anyone could help me with measurements, plans and designs for these types of racers. they should include a roll cage. i need tips on the design of the suspension, roll cage, metal type/guages and body work. cheers will.