Vibrations re re re re revisited

Again in my never ending quest to eliminate a vibration in my 72 cuda I think I caught some conversation on here about tranny locating dowels that may be the cause. I am actually missing one on the passenger side of my engine. After thinking about this I'm sure it could be a cause. Where do I get one and am I right assuming this? I've got all winter to put one in.

Check this out..
http://www.brewersperformance.com/products.asp?cat=225&pg=2

Talk to Wayne @ Brewers

Brewer's Performance
2560 S. State Rt. 48
Ludlow Falls, OH 45339
PH: 937-698-4259

Wayne is very knowledgible for Mopars, besides being a nice guy..

Just my $0.02...

Does it vibrate with the throttle application and at a stop or only while moving? A transmission dowel is a possibility but then it will vibrate at a stop in park or neutral as well as at speed. You have verified you're running the correctly weighted(or non-weighted) torq converter/flywheel and balancer for your crankshaft?

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Again in my never ending quest to eliminate a vibration in my 72 cuda I think I caught some conversation on here about tranny locating dowels that may be the cause. I am actually missing one on the passenger side of my engine. After thinking about this I'm sure it could be a cause. Where do I get one and am I right assuming this? I've got all winter to put one in.

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may be but a doubt it.do you have any in it now?one? ive chased a vibration for years,ive given up.