in the 0/60 you would be surprised on the outcome the biggest power car on here will not win
spool at 4000 revs slow 0/30 quick 30/60 time
jgm 2.5 less power higher torque plus quick spool from md321= v quick 0/60 plus stripped out car ppg gea***t
imho
quick = jgm
fast = scullfudge
i know of two cars on here running vf35 turbo,s which spool at 2/2500 revs and light which again =fast 0/60 time
one of which is a lightweight classic sti with short ratio box the other a newage wagon wrx both have good launch speeds maybe not to 60 but 0/30
by changing to a 6 speed you sacrifice a masive amount of weight and gearing to ensure box can cope with power increase
not sure on weight difference between 5/6 speed im sure simon will be along to tell us soon