Correct Bellhousing for a 67 BB

I don't think there is enough material for a helicoil, there is about half, or more, of the threaded hole gone.

I checked on-line for the correct casting number, and I found 2536945 in a couple of places, and one forum indicated that was not correct and the correct one was 2468372.

I looked at the online, Challenger and Barracuda Restoration Guide, 1967-74 By Paul A. Herd, which is usually incorrect anyway, and it has the 67 383 on the list of bellhousings with no casting number listed.

I would like to get another one before I take this apart.