Looking for speeds for 42 fountain side by side no step straight bottom What power, props, lowers etc

93 525 SC's = 74 mph.... 800's = 92 mph

I have an old magazine article about a all red 42 named "The Dealer". 800SC mercs and #6 wet sumps. Radar top speed was 84mph. I don't think the 800 mercs made 800hp, I wanna say about 750ish....Im sure bravo boats will be quite a bit faster.