I have the Miller 30 A on a 251. I think I can run that spoolgun off my weldanpowers or an SA 200 with some sort of control box. Anybody know the setup. Also can I do aluminum from these? I'm sure the weldnpower with / CV is OK but don't think the SA200 will work out. Do I need the CV for aluminum? I believe I can hard wire MIG from either one. Does controller have the gas port for hookup? Thanks."Si Vis Pacem Para Bellum"Lincoln Idealarc 250 AC/DCMillermatic 251 Syncrowave 300 30A spoolgunLincoln MP210Hypertherm 45(2) LN 25(2) Lincoln Weldanpower 225 CV(4) SA200 1 short hood SA250 SAM 400