Happy Holidays to all. Hello to all. I need some advise. I have a 1978 F350 dump truck that had a 400 with standard granny gear 4 speed. I have a 1986 460 engine that I am trying to install in it. I have everything figured out and fitting except the original bellhousing from the 400 doesnt give me enough clearance to bolt transmission to bell. The throw out bearing hits the transmission and there is no clearance to slide it. I could make an adapter probable 1/4'' to bolt between the transmission and bellhousing but dont like that idea. Any ideas?