its as tony says ,
 had i known two weeks ago i would have bought it back as the need for one came up ..ended up spending nearly 600 for a racetronix kit 
 
 its a reds with his 340 based XP pumps 
they are a drop in , tight but they go 
low low miles 
 was in a full weight a/c GN w/ stage 2 that only saw C16 so no alcohol or water corrosion issues common with pump gas 
  wasnt a daily drive but saw some street use as it was driven to the track and only made a couple track appearances  .went high 9s 140   but had  the adj oil pump bypass fall out on a pass ,no oil pressure is not good.   car went back to stock
 
i run a twin in my 86 (with 93 alky) and still on stock fuel lines,  the twin 340s should be capable of supporting to 900+hp with proper fuel lines
heres the flow chart for the twin reds 
http://www.gnttype.org/techarea/images/doubleXP.gif
at 15v its rated nearly 100gph at 70psi