174/177 supercharged small block, where to start?

dodgy said
Mopardude, with your 10 rib kit, what did the crank pulley come as, drilled for mopar or just the three bolt holes and did it have a large boss on the back?

I actually had it made locally by a machinist. But that was almost 10 years ago. 6 holes for the standard mopar bolt pattern and a 1” locating boss on the back.