I'm wondering if anyone can help me settle on a fuel pump for my '56 Country Squire--an occasional driver in original condition (42K miles on its 292). Right now it has its original (two rebuilds that I know of) dual-action pump; I really don't need the vacuum section since in 25 years I've never turned on the wipers--I've never taken it out in the rain or driven it when rain was even remotely in the forecast. Anyway, I went looking for a single-action pump to carry as a spare, and there it becomes a minefield of misinformation, at least as far as the parts houses go, the standard ones as well as the vintage-parts suppliers, none making much sense as to applications, or having any reliable pictures to go by. Most offer the Airtex 6523, with the "can" filter that screws on to the bottom; problem is, this appears to be too long to fit without removing the splash shield under it. Other suggestions are the Airtex 3450, which is a simple design with no filter, which I'd prefer. Another is the 3150. (None seem to have the inlet/outlet in exactly the same place.) Thanks very much.