Motor Mount Question

[My72]

I bought a 72 duster with a /6 and am putting a 318 from a 74 dart into it. The guy I bought the car from gave me a set of schumacher motor mounts but it says they are to convert from a /6 to 340 or 360. Can I use these on the 318. Not exactly sure what the difference is.

 

[Radarsonwheels]

One side is a different width on the block. I think you will be ok with a bunch of washers? You'll have to go measure to be sure but that's where to look- the ears on the block

 

[Bulldozer]

look here in transmission and drivetrain tech it may help although these mounts are not the conversion mounts --- Motor mount bracket difference - 318, 340