Yes, it would be easier to modify your Gen III engine than to do a complete swap for the Gen IV. Just follow what the factory did to add 100 horsepower- Better Heads being the biggest change, by far.
600 n.a. crank is not hard and many on the forums have hit this level.
So, have your Gen IIIs ported or buy some Strikers and a cam; Strikers cost more but give you benefits you won't get by porting your stock heads. You get what you pay for here.
Like Stink said, modifying these trucks costs money and using the best stuff, costs even more...
Ronnie
600 n.a. crank is not hard and many on the forums have hit this level.
So, have your Gen IIIs ported or buy some Strikers and a cam; Strikers cost more but give you benefits you won't get by porting your stock heads. You get what you pay for here.
Like Stink said, modifying these trucks costs money and using the best stuff, costs even more...
Ronnie
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