Originally posted by Sow&Steady
Plus, those parts you don't need immediately such as 2-speed clutch set etc will eventually come in handy when the older one wears out.
Aha, but you're taking the 2nd kit and building the lightest car this side of town has seen !
Remember?
Originally posted by Sow&Steady
Yet others such as the pinion set, what I do is have them installed with other sizes (16-21) and I keep the original 17-22 pinions as spares or ... see below.
You're using 21T pinion? I find that using about 60 to 62 mm tires with the stock 22T pinion is about right for the normal straights at Titi. Unless you have an engine which can scream 48,000 rpm !
Originally posted by Sow&Steady
Above all else, if you happen to drive at a track where there are others with the 710, you'd most likely end up being the good samaritan who just happen to have that part he needs. 
Really?
Oh good samaritan, where are you when I need you for spares?