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I picked up a toploader 3 speed for a bargain price the other day. It was bolted to a 351... best I could tell by the valve covers and exhaust manifolds. The casting on it is D2AR 7006 AB and the tag is RAN CU over JC ##0995 (#= unknown number).
Any help appreciated. I've found lots of toploader charts but none of them have the AB from the casting, or the CU from the tag.
Found this one, looks like it might could be the same as yours, although that casting revision date of "D2AR" is a 1972 version, so it could have appeared in other or earlier models as well.
I picked up a toploader 3 speed for a bargain price the other day. It was bolted to a 351... best I could tell by the valve covers and exhaust manifolds.
The casting on it is D2AR 7006 AB and the tag is RAN-CU
RAN-CU = 1974 P (Maverick/Comet) 302 w/a floor shift (see application in pic below).