if your not in a hurry to get this thing built there is a way to do it. the five disc drum, wider band and matching stator support was used behind the 360 in the cop cars in the late seventys. only for a few years they were non-lockup. so those stators are quite rare. but there are lots of drums and bands still availlible. so... if you know of a good machinist, you can cut the backside of your stator to fit the 360 drum. there is enough material there to do it. ( ive done it ). then with the wider front band you basicly have you 999 minus the gearset.