new injectors

Just picked up a set of fuel injectors off a 4.6 crown vic they are a yellowish orange color can anyone tell me which #lbs these are? also what problems might I run into installing these, Im going to put new o rings on anything else. Will putting these injectors on mess with the map sensor? run rich lean?

Ford OEM injectors in that color are 19 lb/hr. I'm not sure what OEM Jeep injectors are, but if you go to a different size without correct tuning (ie - custom "chip") it will likely not keep the proper air/fuel ratio, which could potentially cause damage (expecially if they are much larger/smaller).

The 4.0 is #19 lb/hr