Yep, it's official: I'm big-blocking my '83 Imperial. It's not my first go-around with shoving a big block into an FJM, but last time was a 440 and the guy I was helping...well...his "come hell or high water" approach made for some interesting stories. This will be a 1975 400ci and 727. Already planning on Schumacher mounts, expecting to have to alter my driveshaft (or go custom) and I'm looking for subframe connectors. I'm planning on using the Hedman headers and I'm looking at torsion bar upgrades in case they feel weak once the car is mobile. Anybody got tips or notes that I should be looking at?