For sure you can change the rollers and run traditional spray transfer with a push-pull or even a regular whip. Just be careful to keep the whip straight and if you have a short whip that is even better.
I have a call in to a friend @ Miller who can give answers about the GMAWP and large bore wire..
More later
Word is that the 350P does not have the horsepower to Pulse 1/16 Aluminum. It will for sure run it with traditional spray transfer but the starts may be a bit rough.
The XMT will run 1/16 Alum GMAWP.
The 350p works well with .045 alum. 10' gun, non-metallic liner,oversized id tips, push process and factory pluse settings.