The first B16A I bought for my coupe did'nt last long and the first B16 I had in my old CRX was in pretty sad shap internally when I got it. Yes, a built B is better then a Built D but A freshly built D will cost about the same price as a swap and then your all ready for boost or whatever you wish. I going the built D route now to prove my theory so I'll post my times as the project progresses.