Still running a T34 but he recently went from a stage 3 greens (MSD stage 2) conversion to a fully live mapped set up with closed loop lambda control, 30 odd PSI boost and 550cc injectors (bigger than greys).
A stage 3 is only around 40 bhp more than a stage 1, enough to feel faster but I'd have said it won't be massively different. Saying that, he did have a few problems with it a while back and he kept complaining that it didn't feel as fast as it was meant to be.