I have a 1985 with the 2 barrel 351w in it. Its getting old and tired so I am looking for a donor to rebuild and possibly add a little power to. I was thinking of stroking it but stroker kits are a lot and I dont know how well that will pass ca emissions. I want to switch to a 4 barrel when I put it back together, is there any ca smog legal aftermarket intakes I could use or should I just find the stock one? also will gt40 heads from the explorers work on this engine or does it have to be fi? I have been doing searches but had a few specific questions. Thanks.