Thanks everyone!
Bill and I belive the car has 400hp in it with a little more tweeking. We got there about 1/2 hour late from me making wrong turns. Then there was weird problems with the dyno not recording pulls and other times when the WB tube kept getting blown out of the exhaust. So the two hour tune turned into over a 4 hour tune.
We actually make 393.5 on a run where the ICCU weirded out and added 30* of timing at WOT

It had a few blips of
KR but everything held together. I will admit intercoolers do work very well!
The things that changed from the last dyno of 372 was we added a ZZP Stage 3 intercooler, BBK 80mm TB, had the inlet of the Gen V bored to 80mm to match, and added a fuel cell, fuel pump, and large fuel lines.
I had the tune all messed up and made about 330 hp on the first pull with a 3.0" pulley and 16* of timing. This is how we ran at Pontiac Nationals. The A/F was around 13.5:1 with no
KR. oops.
Now we are running the 2.6" pulley with 21 degrees of timing and a A/F of around 12.1:1 I think.
-Greg