There are options for the splined hubs of Alloy wheels but they have all looked a bit clumsy to me other than the Morgan Lightweight Alloys which were only produced for a short time for the Plus 8's back in the late 90's.
The other splined hub alloys that look good imho are the Baby Doll ones once again produced in limited numbers.
As you suggest they would be too wide and the diameter I expect would be a problem for a 4/4.
I like the look of his racer, it looks very purposeful.
From my original sales brochure (passed to me with the car) they were a £1,674-38 extra at the time July 1999.
![[Linked Image]](https://www.tm-img.com/images/2021/07/21/min.jpg)