From Lenny:
Jim,
Yes, I build these type of Adapters all the time!
They will convert your 4×130 to run 5×130 wheels.
We can build them at any thickness you want! We will build the adapters hub and wheel centric to insure a perfect fit and no vibration problems
I will also supply you with all the correct hardware to attach the adapters and the wheels
In Fact, I just built a set of these for my Uncle about 2 weeks ago… We converted his VW 4×130 to run some old school 5×130 Porsche wheels and they came out perfect
The kit would run you right around $360 for all 4 adapters
Let me know your thoughts, Thanks Lenny