Good point re aluminium bushes. I'll look into that. Rubber bushes certainly do isolate any vibrations through the steering wheel. I've got a good contract at the Vic Jag club. I'll get him to ask around to see if anyone has done it, especially the race boys of the club. Someone there has probably done it
There is quite a strong racing group with their stripped out XJ's and Mach 2's etc
Cheers