I bought a set of SOLO HFC's off another member and was under the impression they would just bolt right up. Come to find out I won't be getting the bolts, 02 extenders, or the gaskets SOLO originally includes with the HFC's new. Is there somewhere I can buy the bolts I need, and if so what size? And what about the gaskets/extenders, the guy I got the HFC's from said he didn't even use them, are they really required? I'm planning to install them this weekend so I'd like to find alternatives before resorting to ordering and having to wait, but does SOLO even sell just the bolts/gaskets?