Hint:
If you go to look at it and buy,take TWO VEHICLES.One that you are in and the other pulling the trailer.Have a friend with teh traler stay a couple blocks away and wait for the deal to be concluded.Then pull up.If the guy sees the trailer right away-he knows you want it bad.
Not what you want to hear,but.......with what you've found up top,the bottom is a giant question mark that's gonna fester in the back of your head.Take it apart.
The seller has been doing internet "research".And everything he reads is true.Rare-ity doesn't make up for condition when there are no real parts sources.
Someone got tired of the pump is running while the engine is spinning only mode.Cars with vaper lock issues would benefit from the pump charging the system without cranking first.
Recently there was a show ready 810 goon for 3500.00.That's a 1200.00 car.Body parts in that part of the country are gonna be impossible to find.( i have them though-shameless plug)
I've been running solids in everything from Datsuns to Ram AIrIV Pontiacs to 427 Side-oilers to 426HEMIs for the past 40 years.And i've never done what you're recommmending.And more important-never even heard of it.
If you are going to run a sanden type compressor(Yorks are garbage)It will not clear the manifold or if it does,it'll be so close that exhaust heat will bake it.
They mounted on the passenger side.You'll need to install an electric fuel pump as the mechanical one will be in the way.And you'll need the idler pulley