when I went manual 5 speed in my 85 truck (NV4500) I replaced the fly wheel with one from discount/auto 130$

I would do the same with a 90 360 engine, just buy a replacement flywheel that has correct balance.

what 5 speed do you have?

A535? NV3500? NV4500?

you might want to use the newer style pilot bearing for the 92-93 magnum engine D series trucks. ask for a pilot bearing for a 93 Dakota 5.2/5.9

it fits the crank hub and is a roller bearing. fits in the larger hub that the TC snout goes in.

if you use the smaller bronze bushing type you need to make sure the smaller pilot hole in crank is drilled deep enough to fit.