I know that this gets thrown around some with turbo-ing the D series and swapping in a nice B series. I think if you swap in the GSR then you get good oem power and it leaves the door open to other decisinos down the road. He might consider that he would like to supercharge or turbo or even all motor. I just think it's a better starting point with dual cams, vtec, and more displacement, not saying that the D series can't make power bc they can...
Milan