Ok A14force first things first!
My current set-up is a subaru 'roots type' blower running a 320 Holley & no problems starting (even with no choke attatched to this carb) but it has a little trouble idling on cold mornings.It runs 2.5:1 overdriven ratio.
And yes it`s an A12 running 8.8:1 comp ratio & 8psi boost.
Uphill fuel pipe problems WTF! are you talking about? Please explain!
Yes the Eaton has a tapered helical rotor design which is a more efficient blower configuration than its more common roots type counter parts.
Lysholm screw type superchargers are possibly the most efficient but enevitably much more expensive.
And YEH!!!! There`s nothin like a good blowjob!