Just a nit to pick. The new bolts are not Torx. They are sometimes called "triple square". I just spent yesterday lunch hour looking for a socket bit to fit. Others have mentioned that they found one at Sears, but I could not. I found a "metric internal" wrench at NAPA (12mm) and Pep Boys had a Lisle kit with that and 3 other sizes.
I'm still not sure what the official name is. And the ones I found are not socket bits - they are just a 1/2" hex shaft with the 12 mm fluted end. You can stick the "bit" into a 1/2" socket. I'm concerned about fitting that combo on all the bolts, so I'd still like to find a true socket bit. Gotta flag down a Snap On truck or something...