I am putting a 1970 Lincoln 365 horse 460 in my 1950 Ford F350. I bought a Bellhousing from a man that said it was a rare 1979 460 bellhousing #D9TA-1505-BA. Is this a 460 or 400M Bellhousing?? I need to know this to order a 460 Flywheel or go the 390 Flywheel for the 400M. its a steel Bellhousing and the clutch arm pivot is different than a 400m, its aluminum not steel

 

Sounds like a later model bell housing that would have used the hydraulic clutch linkage.