Help pick a cam

So here the setup.

318 probably .030 over with kb167 pistons.Windage tray, stock rods.arp bolts,balanced,blueprinted,stock cast crank reground as necessary,block decked just enough for square.Not a zero deck setup.

Magnum heads ported with templates,M1 dual plane intake, 650 edelbrock thunder series,FBO ign.

Cheap small tube hedman headers.

Backed by 2:94 sure grip and 904 with stage 2 shift kit.Stock converter(would consider changing it) and willing to upgrade valve prings as well.Just remember the springs need to work on a magnum head.

Going in a 3800+ pound M body cop car.Looking for good bottom end torque and great midrange for passing on the hiway.Brand not important,but should have an audible lope.Needs enough vacuum to run power brakes.

I've run various cams on desk top dyno, but real world experience is better!