(Also replied this on GrandAmGt.com)
It's always a tough call on choosing injectors. Here I believe I would try the Bosch, if they are flow matched, especially.
iirc, those are the same length as the Trail Blazer 28 lb injectors, meaning the tip of the injector protrudes into the LIM a bit further than the Lucas 42s did, which seemed to help at idle, and the spray pattern is probably better.
Also, I did have one bad experience with the Lucas 42s purchased from ZZP, but they were not new or flow matched.
1999 GLS MP90 supercharged / 2003 GL MP62 supercharged / 2004 GLS stock
Magnuson MP90 / TOG's / 3 in. Magnaflow exhaust / MSD ignition / LS1 MAF / Racetronix pump / HP Tuners / TCE 68mm TB / 36 lb Inj
= Best track time: 12.951 @ 104.48, 1.839 60 ft. (Beech Bend Raceway Park, 11-23-13), 50 Deg. F