Solid Flat Tappet on Hydraulic Cam?

A decent mid-range grunt cam for a 360 in street truck with 3.23’s would be something like an XE262.
That’s a hyd cam.

If you were looking for something similar to that in a solid lifter cam....... you’re likely going to have to make a call for that, but it would be along the lines of a Comp Magnum 270S(although a more modern version would probably be better).

The XE262 would work with the stock valvetrain, and a spring upgrade.
The solid needs a fully adjustable valvetrain, along with a spring upgrade.