I had no problems with my ATI damper with 6 bolt Chrysler bolt pattern and a MSD crank trigger with a stock water pump housing but using a Meziere electric water pump. I would recommend going with a big block Chevy bolt pattern hub, that way there is much more available for front drive set up and pulleys. I had to make all of my brackets, mounts, spacers etc.

1963 Belvedere 440 Max Wedge Tribute
1970 Charger R/T S.E. 440 Six Pack
1970 Challenger R/T, 528 Hemi
1970 Charger 500 S.E. 440 4 BBL
1970 Plymouth Road Runner 383
1974 Chrysler New Yorker 440
1996 2500 RAM 488 V-10 4X4
2004 3500 Dually Cummins 4x4
2012 Challenger R/T Classic.