ok ive been runnin my 98 with the 5.0 for about 7 months now with no problems at all since the swap......but now im wantin to fine tune some things.....i hooded up my air fuel gauge today and im not very happy.....it goes lean on full throttle......and at idle it has a hince of white smoke....but if i was runnin that lean.......im sure it would have blown up by now cause i beat the crap out of that little motor........i set the tps and cleaned my iac.......made a little difference......but i am still runnin the v6 02's i know i should get the right ones.....do you really think that is the problem....cause it runs great and idles perfect almost........at about 900.......i have o/r h pipe and took out all the emissions.....and im still runnin stock t4mo computer.....let me know what you think.....cause id like to get it figured out soon ....even though ill be dropin a 357 twin turbo in it..........should i get some kind of tune...or what could i do ....i do have a buddy with a original 94 gt if you think i should swap 02's and see what happens first......get back and give me your 2 cents....