5.9 magnum cam in a LA318(roller)
The cams are different.
The 318 roller will be more lift and mag is more lift @.432+ than the stock 5.9 stock cams that were only .410-416 lift based on a 1.6
The rt magnum cams were more lift than the reg stock mag 5.9 stock cams @.434+or something like that.. but with a diff duration than the 318 or 5.9 stock.
Milage would be the stock 5.9 , power would be the 318 or rt cams.
You can google this stuff and find it. A lot of people don't know the diff or that there is a diff. I had been researching this stuff myself a short bit ago and verified it... I even have a RT cam I can measure and verify as well. The 'some have oiling to the deck' not my 96, it has no oiling for la gear maybe a early 95 would.. lol