Hi Jim, I remember reading your thread on that swap.

I don't think (not 100% sure) that there is a capacity difference btw the oil pans. I though that too, and like the idea of having the side sump access, but I am using the timing cover from the 3.5 and the dipstick is right for that oil pan. Didn't think about the mounting screw holes- I'll have to look and see what I have when back at the shop today.

I'd like to run the lighter flywheel, but I don't have the opportunity to experiement.

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Chief

1991 350SD