We have some kits, they start at $710 for the single springs, pushrod, cam, or $745 for the lunati dual spring kit, pushrods, cam.

all aftermarket cams are going to pull to 6000rpms, even the stock ones pull up to 5700rpms or so.
probably the best cam we've used for lowend torque is the 208/212, which will still pull to 6200rpms.
Little more aggressive would be 212/218.
Neither will need an aftermarket converter for a daily driver.