Ya got an airsal kit on there n biturbo an your doing 35 -40. Get it to 45 n quick n then you can start messing with other stuff. A 14 carb can easily get u to 50. Change the stock airbox n get the metal mesh like roffman suggested but with less of a sweep it will tuck under stock cover. After making sure carb is a 14 read the numbers on the other side get some jets.
Read up on jetting n carb tuning. Im guessing around 66.
Read up on oil injection.
Read up on clutch springs.
Biturbo works fine.