[rbuswell]

Michael, keep using the PB Blaster (over and over and over again) perhaps over a couple day's time without trying to break it loose. File down the parts of the bolt head you've rounded and then get a really good six point socket (at least 1/2 and maybe even 3/4 inch drive). Put the longest breaker bar you can find or borrow on it and THEN put about a 36" to 48" steel pipe (about $3-4) from Home Depot over the shaft of the bar. BTW, use a socket and breaker bar that will be replaced if you break it/them (Craftsman, etc.) and wear really good protective clothing and eye protection. Also make sure you have it really secure on the jack stands. It will break loose! But it's a bugger especially if it has never been off.

The bolts aren't that expensive or hard to get so try not to worry too much about them.