[bbraden]

International? They haven't been IDI since 1993. The '94 PSD was DI and the PSD has been ever since. Either way, DI is the ONLY way to go IMO. Starting an IDI in cold weather is not fun at all.

I just think that by the time you spend all that money on the head, including the studs and gasket, then get custom pistons, and pay for an injection pump of some sort, plus the cost of fitting it somehow to the 300, you'll have been able to buy 2 6bt's out of a junkyard somewhere.

EDIT:
Oh and don't forget about the turbocharger and intercooler plus all the cold side piping if you decide to throw one of them on... plus a stout enough manifold to hold it up. It can start adding up really quickly, where as an older 6bt with 350,000 miles on it will still have more life left in it and probably still run cleaner and more efficiently than a home-built gas to diesel conversion.