Very tight fit. Also very heavy. Lots of weight in the front end. Hard on brakes. better add a few hundred extra pounds on that weight sticker. Ever had the cars axle weight determined? Depending on where you live there are a few sources of vehicle weight scales. Large grain & feed stores, truck stops, scrap yards etc... Handy to find out what your car really weighs and how much is over the front and rear axles.
Back in my high school days, I put a 392 and the push button Torque-flite out of a 1957 New Yorker into my 1955 Ford F-100. Made my first set of headers on it.The stock rear Dana 44 didn't last long. Back then Dana 60's were plentiful and cheap. Got mine for $100. bucks, drum to drum.