I have Flowmaster 40s in place of the suitcase, it is a TIGHT fit. I would put the 44s in the back, take off the resonators and put the 44s there. Replace the suitcase with a couple of straight thru resonators (glass packs) to rid off any drone.
A nice sound..................
Bob in Ocala, Florida, 05' Magnum RT, 75 years young - married 54 years. Superchips tuner & Flowmaster 40's. 402 Motoring rear spoiler, mud flaps, tinted & painted tail lights. Danko shaker hood, 69' Charger grille, front spoiler, rear diffuser, Installed 9011 & 9012 headlight bulbs, NO-ESP mod & many others.