I found a company in san bernardino called MK HAMMER.com speed marine I have a 21 foot lx ultra open bow.mk hammer.com speed and marine they have 3 styles marine blocks 540 565 598 dart m blocks for about 3, 995 dollars comes with crank block scat pistons rings top end.then for 2, 000 to 4, 000 three styles dart heads racing roller rocker ready to assemble.. Or for 13, 000 you can have a complete dyno tested ready to go motor those motors capable of handling 800 +hp.they are what they say reliable.. What do you guys think.
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