I currently have 26P 3 blade props
im looking to upgrade to a 30-32 4-5 blade
what can I expect from the change
o and I have brovo 1 drives and 435hp 502’s
and advise or knowledge of changes outcome will b appreciated! Thanks in advance

Unless you are adding about 250hp to each engine, you won't be able to spin those bigger props

Agreed as to what Griff said.
But at 1/2 throole, your cruising sppeed will be tremendous. I'm not suggesting you do it just a comment.

Brett