Be careful with your cam selection. hitek are better than stockers but unless you have the "standard one piece" system from them with the long pipes you will be quite limited with your cam selection.

Before you dig deep in this, do you have a planned budget in mind?

I bought a boat with Pro Comps on it and just got rid of the whole motor after some discussions here. For a street rod car they may work fine, but for the high intensity of wide open throttle in boats along with raw water they just don't hold up. Valve seats coming loose, incorrect valve angles, bad metallurgy, the list goes on forever.

Well i am hoping to be under 6g..

If you insist on el-cheapo heads see if liberty offers a set of big ford heads they are way better than projunk and builder price is cheaper as far as Chevy stuff goes. Not sure if they offer a Ford head yet. Keep in mind if you change the horsepower of the motor you are going to make the necessary adjustments to the oil and fuel systems as well. If you sit down and add it all up I think you would be way ahead buying another boat.

Double that figure and you should be close.

Just to save you the headache here's what another member did with those heads...
http://www.offshoreonly.com/forums/g...recipes-3.html

Yes, definitely a larger oil cooler so figure on about $600 there, new oil lines as a larger cooler most likely won't fit in the stock location (depending on whether you make them or buy them this can get pricey), new fuel tank pick up and lines so probably minimum of $100 there.

I wouldn't get discouraged, there are just alot of things to consider. Take a look at the whole picture and then make a decision. Is it worth going through all of it or just sell the boat and use your money for something that does 65 already?

Some people get overwhelmed and then never finish what they started. It definitely pays to know what your getting into from the start.

I did a 509 this summer that is about 600. With the purchase of exhaust the total came to just over $12,000. So I would say forget $6,000 when you ad in machine work and assembly.