Where to buy Heads

Actually, from what I understand, BJR is very reasonable compared to some others. Shipping may be a little, but it's prob worth calling him. Personally, I wouldnt live in fear of running aluminum heads. They dont leak, they are no more prone to head gasket failures than iron, they are lighter, they have that "OOohh, AAAhhh" at the cruise nights, they have modern fast burn chambers, and depending on the porting of you iron, they will make more power. There are sometimes issues with coolant seepage when MLS (Multi Layered Steel) gaskets are used. That's because the gaskets are made to seal after they are heated. The sealant is activated by engine heat. Most times, after cam break in, there is no seepage. Also, what many guys dont consider, are deck/head surface finish, and retorquing the head bolts/studs. Surface finish left by a grinder may be too rough for some types of gaskets to seal with the different expansion rates of iron and aluminum. The gasket surfaces should be milled (with cutters) not ground. Retorquing is important in most high performance engines, regardless of head material or of gasket type/material. It's imperative when running aluminum, or MLS gaskets. I do it at the same time inner valve springs are added. Any bolts into aluminum (intake, headers, brackets, whatever) should have anti-seize or thread sealer depending to prevent the threads from galling. I use liquid teflon on the intake, antiseize on the headers, valve covers, accessories.