Were to start
 

02 cigarette gladiator w 900 blower motors I spin 4 blade 32 need help were to start

You spun 32's with what power prior to the 900's? Have you tried the 32's? What where the results? Need more info

just ran 4000 rpm hit 78 mph on GPS on the way up props slip at first start with the old 32s witch are from the old motors 500 efi just want to see if any body has did this before with the same boat trying to save time and $$$$$$$$$$$$$$$$

With a additional 800 HP you should run out of Bravo 1 pitch options since they only go to 36's.
This would create a gear change requirement.
Run the 32's harder and then we can see what is next.
We do have test propellers.

Brett