360 to 904 sorry confused

There's also an "early Magnum" kit that is basically some weights to weld on the torque converter - the now-defunct B&M piece is sometimes on eBay, the weld on weights are sometimes on ebay, or at a Dodge dealership that still has a parts counter that is functional.

I will vouch for the totally stock Magnum 360 flex plate that came with the hundred billion ugly (post-93 mine was a 96, look for weights near the inside edge of the tone ring) trucks that had the 5.9 in em'. They need one hole ovaled, and the tone ring totally clears the stock 904 torque converter. Or you can have that cut off if you're worried about it.