SCT and local dyno would be the way. For self tuning you still have moates QH of course, but Megasquirt and Holly termi X come to mind.
"Stock block stock cam" is the general turbo rule from my experience. And keep rpms down like you said.
Currently i must admit I'm jealous of OP's motor! I...
Looks good. I have respect for n/a builds especially iron heads. I've seen some ported g40 head builds exceed 310rwhp which is awesome to me. Those are few, far ,and between. I'm going the on3 turbo route my self, eventually. With boost you definitely need a great tune on these blocks with the...
That would have been a fun car with 325whp , IRS rear end and suspension work. I have a lot of Maximum Motorsports parts and suspension work on my cobra.
You'll only go as far as your heads will take you. 290whp on ported gt40 h/c/i sounds right. The 11R heads come in a 53cc combustion chamber...