Saltfever, I don't want to name the company that made these, but they are known for taking a long time to make them. Each wheel is slightly different and after getting the lugs correct we have to modify the center spacer to fit the hub correctly. Like you mentioned its amassing that a wheel could be built like this.
Trent, The bottom picture is with the lugs adjusted and without the spacer in the center. There is plenty of room and the wheel wont come off, and being hub-centric I have a better chance of winning the power ball than a wheel coming off.
Captthunder, They came off Ermie Immerso's turbine liner, and I am very grateful to Don Ferguson for selling me his spare set from that car. Finding any type of 18" rim suitable for LSR is a chore.
Of all the cars I have owned and worked on I have yet to see a perfect set of wheels and when looking for the last bit of optimization its one of the things that need to be addressed. Tony