By-pass smog/air pump

1992 full-sized bronco with 5.8L engine. I let this buggy sit for 3 years 'cause my shifter broke one morning and when I finally started it back up yesterday after replacing the shifter the smog pump was siezed/frozen and won't break free. The belt squeels around it. In addition the bolts hollding it on won't break free either so I can change the durn thing. I even had my pal Paul Bunyon try it to no avail. What if I by-passed that pump? Does anyone one know if that will cause the computer to mess up the running efficiency of the engine(?) And what sized serpentine belt would fit if I by-passed the pump? That would be cool if I could just get a new belt, ignore the pump and drive off into the sunset.