Hey Paul, how are your injectors doing? What did your old scans show?
The guy who has the Power Tuner that'* going to tune my 99 has a 98 GTP with a ZZP full intercooler, 3.2" pulley, Power Tuner, a cheap 3" PVC warm air intake and on the scanner it'* indicating his injectors are maxxed out. That'* a lot less than you have, but I'd bet he has a lot more miles. As far as I know he'* running stock exhaust.... including manifolds.
Upon hearing that I suspect I may have to upgrade to 39# Ford Lightning or 42.5# injectors, especially when I put my GEN V on.