garb.man

Im replacing the track bar and bracket with Rubicon Exp. pieces. Using a torch to heat and liberal amounts of PB Blaster over a period of time, i have only achieved to snap the forward most bolt on the underside of the bracket. Whats the best and fastest resolution, just break the other bolt, can i get strong enough bolts from the hardware shop, does anyone know off-hand what the proper bolt/nut size would be to replace these, also, the bolt that broke, the nut is still attached to the frame, cant seem to get the remaining section of bolt out along with the nut! fast and courteous response is appreciated!! thanks!