I have had very good success with my Fuel Injector Connection injectors in my 3.4 swap. I've been involved with 3 swaps. The first got the Ford 302 Mustang injectors rated at 19lb. It runs rich and only delivers a little more than 20 mpg on a 4 speed transmission.
The second used the original Rochester 17lb injectors. It also ran very rich and delivered about 20+ mpg with huge rear tires and an automatic.
The third used the Bosch BMW V8 injectors. It averages about 25 around town, which rarely sees fifth gear. On the highway with cruise and no air, it has delivered 32 mpg. It doesn't run rich, either.
For informational purposes, for use in the 3.4 liter equipped Fieros: The part number on these injectors is 280 150 941. They are the Bosch pintel injectors with the gray body. (See the corrected information below) Rated at 17lb at about 43psi, which is the pressure rating of the stock Fiero fuel pressure regulator.
Fuel Injector Connection-- info@fuelinjectorconnection.com 770-888-1662