Yes Kevin even for domestic it's too small a blower, There was someone on truckmounters with a 3.2 spitfire (i'm sure same size blower, but please check that) he was always doing stuff to improve his suction! ie. no inline filter, run 2" all the way, baco relief valve, ect.
maybe run it by Glynn (the TM expert) you dont want to be unhappy with the power.