Chris- this bloke imports dual pattern Ford/Chev centres from US and welds them to the required rim. He will then machine a centre ring to bring the wheel to the vette centre bore of 70.3 mm, and weld this ring to the wheel. He has supplied wheels to other salt racers here, and his reputation is good. His prices aren't bad either- about $325.00 US per wheel.
Ron- thanks for the reminder on brakes. Because I will run the vette in tarmac sprints (less the ballast!) I will use the Willwood 6pot ft/ 4 pot rear brakes I already have. They will not fit with the meaty race rotors I normally use, but I will make new mounting brackets for the calipers, to bring them closer to the centre, and use small, thinner rotors, for the salt.
Chris- congratters on the Midgets salt run- I have followed the "engine endeavours" with great interest, and enjoyed watching your speeds gradually creep up, during the week.
Regards, Denis