Really Pete? Really?
I suggest EFI Logics in CT for now. They did an excellent job tuning my LGT after I swapped in the Cosworth SB and built the heads.
When your friend blows up his STi (not trying to be a dick, but all modded Subarus will, the stock pistons are fragile) let him know I have a minty Cosworth SB w/ heads for sale.