i used a 60" nova and spacers . with the 62" you could use 235/70/15 tires without spacers. go to web site rand's ring and pinion and see the effect of different tires heights and gear ratios. there is a number calculator at that site, it is fun to play around with them. my ratio is 2:73 to low but works with the other mods, dual carbs dual exhaust electronic ignition. will change to 3:11 later with t-5 swap. slow as you go, i busted the budget for this year.