Wd40 and give it a try. Some times the bolts will go back in. I'd go with stainless steel because of the restless factor. Do you have a local nut and bolt store?
new engine,1.7 rocker arms,Pipes exhaust, shorty cats , shorty headers,under drive and overdrive pulleys,4.2 upper plenum, throttle body spacer, cold air intake, stage one clutch, shorty shifter, and tune. 8.8 in storage