Flex plate for 5.9 and 904

Just got everything buttoned up and went for a ride. Working well with the shims/washers. I epoxied them in place on the converter. There isn't much room to hold in place while bolting to the Magnum flex plate. Bottom line is that you need to note the height of the converter mounting stand-offs so that the 4 bolt mounting tabs on the Magnum flex plate contact before the outer lip contacts the converter out by the ring gear. My factory 340 converter (weights removed) mounted with no issues as well as a factory A999 LU so I assume all factory converters are ok. Unfortunately I did not measure the mounting tab height on my custom built converter but I will follow up with Edge Racing Converters. Andre is super nice and owns Mopars. You may want to discuss with your aftermarket builder or you can go with a balanced/weighted converter and zero balance flex plate.

Edit....I also had to drill out the flex plate mounting holes for the larger bolts provided with the new converter.
My converter came with the factory offset and non offset mounting positions.