Yes, that's a fit problem for the trannie. The OP would have to have the crank pilot hole turned out.
I worked out the bobweights with the data I have. 273 and 5.2L are pretty close but it still may be off enough to be 10-20 grams off of balance..... or some of my data is a bit off.
I think RRR is correct on both being neutral balanced for the dampers and TC/flex-plate/flywheel.
