I am looking for the best place to buy them. Any suggestions. I know I can make a set but I am worried if the will mess up my 02 sensors when it is time for me to put my stock h pipe and take to the station
no. All that it does is make your computer think that the o2's are working correctly. From what I know, when they do a smog test they hook a tube to your exhaust pipe and analys it with a machine. As long as you put your cats back on, if you had an O/R X or H before, you should be fine. That is like the only way I know of that they do a smog test. If anyone else know's of another way please... do tell.
one more thing. the only way you will not pass is if your cats aren't working properly or if the db level is too high I think.
edit: I just noticed that your in fort rucker. I have a friend there that has a white '90 stang (think it's an LX) w/ bullit wheels and a 347 stroker. That thing is fast.