You are all lucky, or smoking crack. I dunno which, but I'm getting MAYBE 10-12 MPG in my '68. Car runs fine, no smoking or wierd stuff, idles high at 1200 or so. At 2.59 a gallon for HT this is starting to hurt.
'68 428 HO M3 Monster, 4-on-the-floor! Need I say more?