904 vs 727 fit in an early A

904 is just smaller everywhere. 727 goes in but it is tight. personally i would just go with the 904.

I agree. Go with the 904 if you can.

I couldn't get my 727 to fit without cutting the top of my tunnel out and welding in a sheet metal cap shaped on an english wheel. What a pain! I also "massaged" the pinch weld. The clearance problem was in the front part of the tunnel. I couldn't get it high enough to get the trans cross-member in place.

The trans pan is wider too. With TTi headers, there is hardly any room to do anything under there. It is a lot tighter with the frame rails 2 inches less on the early A's.

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