904 race builds

At least you know it's not a lockup unit. It sounds like you have a mish-mosh of parts from various applications. Might be worthwhile to get on the phone with a vendor like A&A to confirm what you have on hand and sell you what's needed to finish the job.
I knew that from the start. I’ll address the issues on the front pump this weekend then wait for those this frictions and steels to adjust the snap ring groove. Simple machine work to do. Like I said first time on the 904 so a learning curve with the BS Chrysler kept changing