5.9 Magnum-833od Q

Super easy to measure using a caliper, Brewers has a great picture of the measurements and what you are aiming for

I bolted down my bellhousing with no clutch and test fit after my first trim, I was a bit conservative so took a bit more off and it cleared.

The end of my input shaft was quite hammered from pilot bushings over the years, so this was actually a very good option for me as the bearing is riding on an almost untouched area of the shaft now.

Alot easier than the alternative option in my humble opinion