well, the v6 t5 is still a WC t5 rated at 310Ft/lbs....more than enough to handle the 280ft/lbs the mark viii engine puts out(besides, a t5 will last fairly long behind a 500ft/lb small block as long as you dont beat the hell out of it....but I will be using it simply because I already have it(from my other engine that got stolen) so i wont have to hunt down a t45 that costs $500 or so with three times as many miles and is likely to have been beaten on....my t5 only has 25k miles on it...besides, the mods needed to make it work are minimal simplybecause it is a v6 model(the v8 model t5 would actually be more difficult to make work believe it or not) one other advantage is it only weighs 75lbs...the t45 or 3650 are both eavier...the t56 weighs twice as much
if this one fails, I will start looking for a richmond 6 speed(or possibly just rebuild the t5 for high power)