What boost are you looking to run? There's a company on Ebay that sells modular pulley kits for the .7815" shaft Jag M90, they also are for the Ford Harley Truck and the Mustang. Or are you just going to bolt it up and see what you get?
Looking forward to following this thread, gotta love the SC'r whine. Oh, almost forgot, your going to break that poor open deck block, it'll NEVER hold any boost. insert sarcasm....
~Josh~