If you are going from 550 to 750 check your amp spacing. I'm sure you will see that your original spacing at 550 will mean some rebuild and resplicing to get to 750. I don't think there's any way around it if you want to do it right (get your inputs). But it's your call. I like S.A. though.
God is great, beer is good, and people are crazy.
This is CABL.com posting #330606. Tiny Link: cabl.co/mbyaw