That's what I do. I buy the 360 magnum manifolds and machine out to 2 1/4"+ to match the 340 driver. Then I sell them here on FABO. I know you're on a budget but thought I would mention it just in case. It's really funny I've sold maybe 20 pairs of the manifolds and the great majority have gone up North!! That's where all the Mopar parts are!!!!!
treblig