Separate names with a comma.
I have a 450 hp 318 and a 3 speed with a 10 inch bellhousing.
A 10" Which bell housing do you have? And how did you get 450 horse out of a 318? And why would you run a 3 speed?
Brewer's Performance - Mopar A833 4-Speed Transmission and Component Specialists
I honestly don't know why you wouldn't upgrade to the 10.5" setup.
If you're turning that kind of HP, you should upgrade to 10.5" clutch. I vote NO on the 9" & the 9.5".
Ram has a clutch that will fit.
1964 PLYMOUTH VALIANT RAM Powergrip Clutch Kits 98729
Finally! Remember, the over center spring on the pedal needs to be removed with a diaphragm clutch. I bet there is a multi disc clutch that may work also.
That's an odd combo; is that built for dragracing? In what year A-body? Jus asking I didn't vote yet, cuz my answer will depend on the useage.