I have a Comp Cams solid street roller in my Challenger. There is about 1500 miles on the motor and so far all is good. The lifter bores have been bushed, I do not know if that helps.
The Cam is small- 248-254@ .050 and .622-.612 lift with 1.6 Rockers. Seat pressure is somthing like 200 on the seat 470 open.