My Duster Adventures

Dang dude that sucks hang in there... 5.9 Magnum swap is well worth it but your other (318?) block might still be good hang on to that. Usually even higher mileage Magnums have good ring seal because of the EFI. Factory cams aren't bad but you can't run an old mechanical fuel pump with them.

Lots more I could say but you can read about it here:
http://www.magnumswap.com/

-Khalid