does any one know where to get a B16a1 or a B18c5 head

I need a B18c5 or a B16a to put onto my B18b intehra ls motor. so if anyone knows where to get one please tell me where! :naughty:

Check classified forums on sites like this, or ebay, or salvage yards. The b16a and b18c5 heads are both pr3 heads from the same cast. There's basically the same except the internals, and the mild hand port job done by honda on the c5. You'll be able to find the b16a head for far cheaper, so I'd go for that.