351M mill...

Hey Guys, I own a 79 Ford F150 Custom 4x4. I have waited for a very long time to reacquire one and did so a little over a year ago. It was a daily driver by the previous owner, until he "upgraded". She sat for about a year when I bought her. She needed some TLC, and having three kids and it being my daily driver I did what I could to keep getting to work and not dropping too much money into her. New Poly Gas Tank, Fuel Lines, Fuel Pump, Plugs, Wires, Breather. The front end sagged so I put on new springs. It has a 351 Modified Mill mated to a C6. I don't know how many times the odometer rolled. She finally gave up the ghost on me. I was told Oil Pump (lots of racket and no power). Anyway, I plan on having it rebuilt and setting the IFS bars correctly (passenger side is clocked to 1 o'clock and the bushings mating it to the front D44 have slipped out. Thinking of a simple 3" lift, maybe 5 for some 35's, but what ELSE fits the C6 that was mated to the 351M? I was told you can change the case but that's more money I wont have. Anything bolt right up if I want to change to a different mill? Any guidance/advice would be much appreciated. Thanks!  
-Masterless Samurai-

Wow, NOBODY else on here knows what will mate to a 351M mated C6? I guess I'll just have my 351M rebuilt with a mild cam and bore it .30 over so as not to make it run too hot.  
-Masterless Samurai-