Pretty much every vendor along the side of this forum should have something along those lines. If they're all out of stock then there may be others (ebay?). Unfortunately I do know of one vendor that does have them but they only ship to Canada.
cylinders only vary between bore sizes (66 vs 48) and port heights are only 1-2mm different. Any jug should work for you, but my recommendation is get a GT2A cylinder and matching intake manifold. The extra wide intake adds a good amount of power.