Hey Jesse,....I have a '78 express,... I also have the float and needle u need.....Brand New In original honda packaging......I bought 2 of each of them ahead of time when i got my tax check......I'll sell you them for alot less than the parts store wants. Holla at me.......Filley a.k.a. stondrangr420@yahoo.com
P.S. As for the petcock.......Good Luck...