See post #9.. keep true SCR in the low-mid 8's; it will indeed help this move out better before the turbo's spool up. (Direct experience of 7.4 vs 8.2 SCR in a turbo 4 banger that needed decent low-mid range torque.)
Sounds like the 318 vs. 360 choice is more about having a free 318. The 360 choice seems like a no-brainer....
So, OP, is this 1 turbo on each bank with an equalizer, or 2 turbos in series? We can't answer the question without this..... :D
