Actually... although not positive, I think that all the good kits for both the B16A and the B18C use T3/T4 turbos... so if this is true, you could easily just buy the kit for the B16, and bolt it almost right up. Remember that there is only like a max 12 horsepower difference between the 2 motors ... I remember reading somewhere that the B16 was under-rated from factory anyway to help sales of the Integra GS-R. Some double checking may be needed to be sure though.

Good Luck.