Reid case hands down
https://www.summitracing.com/parts/rei-pg2000/overview/
and there bell housing
https://www.summitracing.com/parts/rei-bh060

I'm going that way after running JW for 5 years had a few problems with it mostly due to a bad torque wrench but with the bell housing mounted to the pump bolts is not the best of ideas.
The Reid has 8 bolts that mounts the bell housing and the pump is held in like a stock case very nice setup.


best so far 8.53 @ 158.59 MPH 60'1.240