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i think to convert to a 4 valve you need the whole wiring harness and ecu
 

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^ im pretty sure thats correct and you might need some other things as well im not sure out 2v intake will work with the 4v heads i would just get them and then sell them for whatever you can get
 

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Discussion Starter · #6 ·
I think I will take your advise and sell the heads. I'm sure they could make some nice power improvements but thats better suited for someone who is rebuilding a engine. How much could I get for the heads?
 
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