31ft predator cat. whats it worth?
 

i found a 1990 predator cat with arneson surface drives. 454's with gill exhaust, on motor is blown dropped a intake valve and ruined the block. heads have been all rebuilt, merlin grumpy jenkins heads. im guessing the motors would make maybe 400hp wondering what the boat is worth, on a 2002 myco triaxle trailer. please let me know what you think.
i am new to cats what would a power combo of about 2 500hp motors and those drives make that boat run for mph.

31ft predator cat!! is this a good deal!
 

31ft predator cat, twin 454s one is blown, block needs replacing. merlin grumpy jenkins heads. heads are rebuilt. arneson surface drives 1:36 ratio. new interior, nice shape. hydraulic steering. stainless k plane look alike trim tabs. 2002 myco triaxle trailer. the guy says hes got 60 grand in this boat 10 years ago.