It was a 305, I yanked that for a 350 crate motor though. That makes more sense now that I think about it though. No chance they make a smaller sending unit or are brass fittings the better option? Man o man, now if this was my only problem I'd be good to go.
new problem: my car has a/c so the mounting bracket was bolted to drivers side manifold. The headers don't allow that same old bracket to clear, but the paper with the headers said this would be an issue and to get bracket part number 88304. I did that and this bracket looks nothing like the old one and will not fit either. took it back to the speed shop i got it from and the boss their tried helping me by confirming it was the right part and trying to figure out if their was another bracket that worked with this one as he thought. Needless to say we've come up empty handed. So, what I'm curious of now is does anyone have any photos of how their a/c is mounted if they have headers? I know this ones a long shot, but I can't figure out for the life of me where this thing is supposed to bolt to.