I was wondering what the different upgrade options for the WRX fuel system are there not just the components but the different brands and specs...

so correct me if I'm wrong but the major components are:

fuel pump
-stock -?lph
-Walboro -255lph
-Supra -?lph

Injectors
-Stock -330cc
-STi - 540cc
-TXS -640?cc
-bosch -800cc
-bosh -1000cc

Fuel Rails
-Pern

Ruel Regulators
-?


what are the specks on some of the ones I've mentioned ... also what's a good setup for upgrading the turbo but not the intercooler (but eventually the intercooler)