Clutch & pressure Plate for 64 Dart

If I remember right (been fifty years), the four barrel cars used a slightly bigger clutch disc than the two barrel cars, 9.5 vs. 9.25. Maybe a heavier duty pressure plate, too. I know my original clutch lasted 90,000 miles, but the two clutches put in by local shops didn't last long and would slip if I speed shifted. Found out they were putting in clutches that fit, but were barely adequate for six cylinders. I somehow got hold of an actual 273 four barrel clutch disc. By then, the correct pressure plate was no longer available, but Weber made a HD pressure plate for it, so that's what I used. Took a lot of muscle to hold the clutch in at a light, but it didn't slip when you speed shifted. even after I swapped the Commando 273 for a 340.

By the way, the factory Z-bar was barely strong enough for the stock clutch. Mine eventually ripped where one of the arms was welded to the cross shaft. That was before I put in the Weber clutch.

The clutch issue was one of the prime motivators for me to start doing my own mechanical work.

I switched to a 340 sized clutch in the late seventies, and that's what I've run since. But if you want to keep your original 9.5 inch bellhousing, Brewer's has HD clutch setups that will fit an original early A four-speed car. Brewer's Performance - Mopar A833 4-Speed Transmission and Component Specialists

Oops - might should have looked at prices before posting the link. Wow!