5.9 Magnum FI cam upgrade

Good to know, thanks. Ive been doing some research and it looks like the manual flywheel for the 5.9 Magnum with FI is a hard and expensive item to come by. It's got me wondering if the 5.2 Magnum would be a better choice; any thoughts? I've got a good AX-15 5 speed from a V8 Dakota that Im going to use.