its not that much work, other than tapping into the wires at the tfi module conector its no more work than he would have otherwise with the engine being gone through, the spout (saw) and pip can be tapped at the tfi module wiring and if you dont plan on cleaning up the wiring it only takes 5 minutes, then just slap a chip on there for the ecu to spit out a saw instead of spout and all is done, its all the same regardless, not difficult at all
I believe you are correct on the pump, I thought the supercoupes came with 190L/hr pumps but they may have been 110, Ive always gone by the replacement size of 190 but I believe that to be incorrect
190*2.8*0.8=425 rwhp
a stock 110*2.8.0.8=246 rwhp
if you have a 110 you should replace it
calculations are my own from experiences described here for more info
http://info.efidynotuning.com/pre.htm
I recommend a 4" inlet to reduce pre blower restriction as much as possible as well as to give a stock slot meter ample headroom