...right as i am going Grp A type replica i think i want to go rally style engine...my new unit is 7.9-1 comp ratio with big ported head and big cams...what power did a grp a run?????I am happy to run 4 greys and anti lag on the T34 .63 with my engine mods how do i get say 500ft lb and 300bhp?...I take it restrictor...if you derestrict i assume the torque comes down...i want blistering 0-60 times like the real rally car not interested in top end....