Before the list crashed a couple of days ago, there was a gentleman asking about installing an MSD ignition control unit on his 392 Hemi. Performance Automotive Warehouse (PAW) just released a billet electronic distributor for the 331-354-392 Hemi. You said that there weren't any MSD control units for the 392 and this is not true. The aforementioned distributor is being made by MSD themselves. If you call PAW (818) 678-3000 they'll be able to tell you which is the proper control unit for a 392. Their website is www.pawengineparts.com. I hope this helps. Have a nice day. Doug 58 Crown coupe