Mine is an all steel case. Love the OD, 3.73s in the back and run 2100 rpms at 70 mph. I have the Pete and Jakes under floor pedals with hydraulic clutch.
Anybody have a system that works to big the luster back up on headers that are jet hot coated. mine are getting a little dull. Second pic was three years ago.
You can let it go for a little while. Does it get quieter as is warms up? To fix, you will need to spray the bolts with PB blaster or simular. Then hope you don't brake a bolt when removing the bolts. Then replace the gaskets.
I hade to start in the front and move to the back. I tried to start in the back, but you could not get the head pipes up in there. 68 Barracuda with Hipo manifolds