You'll need a cast iron V8 bellhousing from a late 1950's truck, or one from a 63-up V8 or 6 cylinder pickup. The Muncie trans will be a bolt-on to that bellhousing, and the bellhousing will bolt in on the original crossmember of the 58. You'll need to use the 4-point engine mount setup, two mounts at the front of the 283, and the two that attach the bellhousing to the crossmember. The Muncie has an aluminum case, and it won't need an extra rear support at the extension housing unless you really intend to abuse it with a lot of full-throttle shifts. The same rear end was used with both 6 cylinder and v8 engines in 58, so if it's in good condition it should handle the 283 without any problems. You might not like the gear ratio, however. A lot of the folks who didn't grow up around engines that run above fast idle speed get a case of the vapors if they can actually hear the engine run. 283's love medium to high RPM, so let it wind up a little.
Jerry
