The blocks are open deck, with relatively thin walls. You 3.2 guys can bore a pretty decent amount, maybe a 3.7/3.8 on bore alone. You aren't really saying what you want though... NA, SC, or Turbo?

NA, I'd bore, iron sleeve, custom forged pistons with a higher compression, port the head, and go to a tuner.

SC, I'd do the above but leave the dish from the SRT pistons, SRT valve springs, SRT SC, clutched with my own cooling setup and an SRT harness with an SRT ECU... Then go to a tuner lol.

We'll know more about if a turbo setup on an NA is a good idea or not soon.