Then by all means do the ARX treatment in every fluid system (except brakes); get some RMI-25 or SCHAEFFERS #258 for the cooling system. Replace all the fluids, filters, hoses, fasteners; going thru each system carefully with your end point in mind. Clean and otherwise replace the major electrical cables underhood, and clean and protect all grounds.
I also like to replace all lamps, relays, fuses and fusible links as apply. If the component is mounted to the firewall (as is ECM in mine) then dismounting and establishing a cleaner ground has been good for me (done per book specs/warnings.)
Be sure to stock up on FP60 FUEL POWER. Consider the use of LC-20 after the double-dose of ARX you're needing. I hit the chambers with MOPAR COMBUSTION CLEANER Aerosol, per directions, and soak each, hot, cylinder overnight with 3-oz LC-20, start and idle on old plugs until xhaust clears. Then fresh plugs/oil/filter to do the ARX runs. When finished, then LC20 as prescribed and ARX every 20-25m afterwards.
Good luck.