From what I have heard those motors are not the best. You would be better off with either an Eco or swapping in a 3500 and modding that. There is a guy on 60*v6 with a cammed 3500 in his beretta and is making almost 240 hp. Way more work in these cars than is worth it though. Boost the piss out of your 3400 for half the cost of a motor swap.
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