[s-cars] Part No. for S6+ (V8) fuel pump??

[Dave Forgie]

Can anyone (Frederic??) tell me what the Audi part number for the S6+
fuel pump is?  I am still looking to maximize my fuel delivery without
having to go to the Bosch 044 Motorsport fuel pump.  I found out last
week that Bosch made/makes a fuel pump for the 091 G application (0 580
453 081 or 61381 for short) that we seemed to have filled by VDO as the
OE supplier and Pierburg as the current replacement pump.  I am
wondering whether the S6+ pump is also the 091 G or not.

I dearly want to bench test either a Pierburg (CDN$165) or the Bosch
61381 (CDN$265) to determine pressure/flow curve for the pump but I want
to get the best potential 43 mm diameter pump to do this.  I am told (by
Bosch) that I could test the pump immersed in water, pumping water
(which I am told isn't quite as explosive as an open pail of gasoline)
;>)

Dave F.