I believe I used ceramic coated dougs on a 6.1 swap and they fit great... if it was dougs, but no dinging, worked with ps also.

68 Road Runner, 69 Belvedere, 71 Challenger Vert
340 barracuda, 01 Ram CTD, 95 Ram, 04 Ram, 85 Daytona turbo Z
66 GTO, 06 Magnum RT AWD. 07 Ram CTD, 07 Ram