MY build is as follows-
*B16a with ek9 pistons
*B16a2 head (skimmed 30 thou) with skunk2 stage 2 cams
*7.5lb flywheel
*high c/r cometic head gasket
*S80 lsd tranny
*CAI
*ITR exhaust mani
*full 2 1/4 exhaust
*OEM cat convertor
*C/R is at around 12.1.1

What t/b size would you guys recommend?
Would 70mm be too big?