We just finished up this build. Car came to us with Kooks LTs and Borla ATAK catback.
Mods we installed were,
-Procharger D1 kit with stage 2 intercooler
-APF stage 3 blower cam, 235/251 114, Comp 926 dual springs and Comp pushrods
-Twin Walbro 255 return style fuel system
-Reflowed LS3 injectors to 72 LB/HR
Needless to say, My jaw dropped when the first pull made 664 @14 degrees of timing and 10lbs of boost! It was a little lean so I added some fuel, thinking the HP would drop.... Nope, @ 11.5 AFR and 14 degrees, made almost 700 to the wheels! Being a stock bottom end, backed the rev limiter to 6000, still made 670 at 8.5 Lbs
Once the owner gets back from deployment, we'll be building a forged shortblock and 9 inch conversion. See what this D1 can do
And a little video