My 94 bird has a build date of 12/93 and I read in the tech articles the early 94 torque converters have less friction area than the late model 94 and up. Im getting torque converter shudder again. I was going to do another drain and fill and thought it might be time to upgrade the converter and do the jmod. I also heard the 94-95 trans is junk. Should I upgrade some of the other easy to get to parts with sonnax parts while im in there or just the jmod and updated pistons? Im going to do the 96 pan and planned on the mark viii converter. I have a trans cooler already.