Yes you can swap everything over, if you buy a long block you wont need to change over much, but with this block and trick flow heads you might want to upgrade you TB plenum. you can use your ECM you have now, but you will need a tune. you can reuse your intake manifold BUT if you go with trick flows you will need new valve covers since you have a windsor motor and heads?you will need new gaskets intake maniflod, TB, timing cover if it dont come with the new Longblock, water inlet gasket. check to see if it comes with an oil pan if not you will need that gasket, but you can reuse your stock pan. be sure to hang onto your old transmission Dowels from your old engine. That MMR stroker is a bad ass shortblock I have turned it many timesup to 7000 RPM with a long block you should be able to swap this in 2 days and have it running. any more question please feel free to ask. now I fogot to post this before but do not forget this you stock oil pan can be used as I said previous;y BUT you have to bend down the oil galley at the very front of the pan IF NOT the crank bolt will spin around and hit it.. I noticed this during my install. NICK MACDIZLE you guys check this cause it will hit.
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604 RWHP 516 FT LB
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11.2 @ 133 MPH