D/Dart + 360 Crate Engine + 122 tooth flywheel = Trouble ?

I have the 10.5 inch clutch and used d450s in my barracuda with a 360, it all fit. However I got all the needed parts from Brewers except the bell housing which I already had. You need to use the clutch fork for the d 450's. If you go to summit look up d450's, look at the instructions on the last page they give you a part number for the clutch fork. You will also need to use a mini starter. If I had to do it again I would use a mini that is clockable . I am pretty close to the header pipe

IMO if you already have the 360 and spent the money, find another car to put that 360 in. You have a very special rare car. If it came with the original 273 Keep it, and try to build it up to make more horsepower if that is what you are after.
Thanks for the info on the 360 and 10.5" clutch build. I looked at Brewers site and it looks like 1500 for all the pieces and parts. Big decision.
As far as the car is concerned, it is the real deal, but the engine is long gone. The bellhousing, flywheel and trans are correct pieces. The engine is a 360-380 hp Mopar crate engine that was connected to the rest of the car's drivetrain. I do have a spare 273 2 barrel engine that I could use while I collect parts. But then there is twice the work. Aargh........