89 360
Mike, I would use the 1.88s if the seats aren't too bad, I think that you ment 1.92s but either way the smaller will be better for the street. Give me your e-mail address and I'll send you some pics of some commandos and the way that it should look, but keep in mind that these are aluminums but the work is still the same.
I would also use the the XR274HR-10 cam. I have some heads here that I could get some shots of and send them to you also but they'er not finished as of yet, but still show you the work that has to be done. In fact they are the heads that the flow #s are from.
More than likely the engine that you have is going to be a roller unless someone has changed the cam before you got it.
BJR Racing