180athid - most of US Supra owners switch to VPC's as their models came out with AFM's, and they never seem to have problems with it.
In terms of handling power, I guess if the Veilside GTR (domestic fastest street speed GTR) has one, then that's good enough
rx-[7] - yes they will mate, it's own loom connects between the ecu and the engine loom (the blue-ended loom in this picture http://www.mkiv.com/techarticles/fuel_cont...rol/hksvpc2.jpg). It creates its own MAP and removes the need for the AFM's, without affecting the management