only figure i can remember off the top of my head is 14.1 QTR mile for a 24v.
that car had a janspeed zorst + filter tho
as for 12v theyre std of 8.2 0-60 my old 12v TT did a 13.8qtr
my mate's 24v (just zorst+filter on that one i think) was only a TEENY TINY bit slower (say 2-3 car lenghts from 70-130) than my old TT and that TT kept up quite happily with popeye's old stage1 2wd