im using magnafuel external 750 series which is capable of 800+ (loud ass hell but you get used to it)
im also running a whole new fuel systems complete with fuel cell new feed and return lines external pump, filter aeromotove boost sensitive fpr and 1000cc injectors i did maxx out my injectors at about 6000 rpms and the only reason they got maxxed out is because we were running the car without a peak and hold driver for the injectors...

are you sure your pumps is the problem? or ar eyou maxxingout the inectors.....

 

we maxed out injectors and hp was not there,
Compect SC - 10lbs boots, 750 inj - 360hp

We do have a fuel pressure guage on rail, so did another pull and had seen a loss of pressure above 7000rpm, that also shows lean on af on dyno.
Looks like I am going to change pump to 255lhp, run new power wire (8-10 guage) to fuel pump, goto a smaller pulley on SC and give it another go at 14lbs.

if fuel still is an issue might try this
http://cgi.ebay.com/ebaymotors/ws/eBayISAP...0205805294&rd=1