Driveline and Pinion Angles
When I finished my transmission driveline conversion I double checked it with this tremec app. It’s easy to use and lets you know if your inside or outside a good angle range. Every car’s a little bit different. As 67dart273 said...you need to know your engine/transmission centerline angle to establish any base line changes. Lots of good info here for sure. Use the search tool and get ready to read. Good luck.
https://www.tremec.com/menu/tremec-toolbox-app/