Cheap 318 performance mods.

What year, body,of magnum manifolds are you suggesting?
I got mine off a 2001 ram 1500. Had to do a little work on the drivers side to get the downpipe to fit right but it fits using a floor shifter. Now a column shifter I dont believe it would idk tho it would be tight. I actually ended up using the factory downpipe from the same ram and cutting and modified it to fit my dart I started with a straight down pipe and it hit the torsion bar. The factory ram pipe had a curve in it that fit around it perfectly. I'm sure a good exhaust shop could make it work no problem with a custom down pipe but I just made my own. I have a thread on here somewhere about it it's a few years old now.