Not 100% sure of the kit number Cab, but I talked to Scott Koffel today, and he confirmed that the studs in the ARP B1 kit is the same length as the studs that I have on this engine (2.750"). From what he told me about the deck surface thickness of these heads compared to stock (as they were when they left his place) it looks as if these heads have been milled about .200". The bottom row of studs had to have two washers (on each stud) to keep the nuts from running out of threads, and even then, there was almost .500" stud sticking out of the nut (looks really shade tree to me!). And this is with .065" head gasket. What don't make any since to me is the long studs only had one washer and approx 2 threads above the top of the nuts.
Hard for me to believe that ARP would sell a kit that didn't fit any better than this.
These are B1-MC heads also.
Brian