do I need injectors
You have a 2000 with smallest available f body inj. at only 26.4lbs, 98, 01 and 02 all had 28.6. I switched to a 02 set for free running a cam and 150 shot of nitrous i was out of fuel. I would say at a min you would want to go with the larger stock inj which are usually really cheap. if you plan on more mods, nitrous, etc...get a set according to power potential. Dont forget to tune, larger inj, need tuning so you dont wash your rings out.
Charlie

