[jmz]

SWB is a **** ton of fun. No reason to convert it to a LWB unless you want to build an RSR or something. My 68 with a mild 2.8 twin plug is one of the most fun cars I have ever owned.

If I were going to convert one to a LWB I would put it on a celette bench and install new trailing arm pick up moutns make sure the trailing arm pick up points were in the right place. I wouldn't replace the torsion tube unless it showed any damage which is quite possible. (ask me how I know)