Just check your stuff over real well if you get stuff from trans parts online. I’m building a 42RH right now and had to order a new pump. I ordered it and after not hearing anything for a couple days, I called out there around 8:30 AM California time and I think I woke the dude up. he said he thought he had a pump but not the right one, so he was getting one and it should go out in a day or two. I did get a pump about a week later and just this morning went out to the garage and the new pump is only assembled with two bolts, one of them being a garden variety hardware store bolt. Going to open it up and check clearances, because, just because.