I have a question, I picked up a tranny vibration in my 64 Valiant Signet 200 convertible, it’s a 225 with push button A904. Checked U joints and ball and trunion, both look great. Rear end and wheel bearings are all good. There is lots of end play on the tail shaft and the vibration comes under acceleration and almost goes away at driving speed when the tranny fluid pressure is up. I have an opportunity to put a 904 in out of a 73 valiant with a 225, and I can get a drive shaft with the slip yoke needed for this tranny. What is the differences? Is a 73 904 partial throttle kick down? Mine is full throttle kick down. I also have an 8 1/4 rear end that was put in when it was switched over to a master power disc brake front end kit with a 4 1/2” bolt pattern. I also have a local available original push button A904 rebuilt tranny that I can purchase. Is the 73 with the slip yoke worth the upgrade or just a quick swap with the A904 rebuilt? Any info or insight would be greatly appreciated.. thank you. Pat
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