I am new to this site, but i have a 1999 Donzi 26Zx with a destroyed 502 in it. Insurance is going to give me roughly $12,000 to replace the motor, but any advice on what to install. Looking to try and keep the speed between 70-80 mph.

What did you do to it? Swap shop has a 525 for about that price.

I got it stuck in the mud and burned up 2 cylinders

What is swap shop?

I would call Bill at Ateco Did fine by me . For about what you are spending I got a new 540 575 hp that I really like

I have a 572 in the swap shop section for what you are looking to spend. It is ready to drop in...

DEAN GELLNER in ohio builds a great motor he is in powerboat mag for the second time in 2 years, you should call him if you need his phone# I can leave it, Art he builds motors that last for years.

I can build you a 650 HP 540 pump gas long block for around that. Please feel free to contact me.

Best Regards,

Dean Gellner