We did a 500 EFI package with Bob Madara last year that made 650 HP.

How much is a 500HP or 525HP anyways?

Forget it... I found the price... Thats crazy...

Mine were about 510 and 515

With that plenum different heads and cam will offer very limited results. I spoke with a very irritated individual at a poker run about $20k+ upgrades to his 500efis. Dart Pro1 heads, motors hit a wall at 4500rpm. A well respected builder/tuner built and dynoed them, it was the owners opinion that they should have never made it to the boat as they hit a wall on the dyno as well. Owner also talked with sterling and they had seen similar results.

I like the 34 Viper, considering one for my next ride - whats the word with the Hull?

We like ours,look for a late 2001 or newer. (Faster hull)