426 Wedge possible install challenges

cudamike13 said

Another thing to consider is 67 904 input shaft and TC are a one (1) year only size.
I found that out the hard way. A TC I bought for what I thought was the right one, would not work. (not Fit). I had to buy a later year 904 !

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I don't actually know what year trans is in it. My understanding is that the motor and trans that came with it were swapped there by a previous owner a long time ago and it originally was a 6 cyl. Might be the original trans. Not sure. I have to take it out anyway so I will figure it out at that point.