Thanks to all - I really appreciate the info and the suggestions.
I'll call PRI and see if they can help me further. Still not 100% certain, but I think my front hubs are vitesse. I think my rears can just be re-drilled between the existing studs.
Found these over a year ago:
https://www.merlinmotorsport.co.uk/ALLOY-HUBS-Alloy-Hubs/c415_416/index.html
They said they would custom fit any bolt pattern I wanted. But they have gone up significantly. I think they were 78.00 GBP when I first saw them - and the dollar is weaker now too. (Seems to me that performance car parts have a much higher inflation rate than other products.)
My stock wheels are 14X6.5 +38 4X4.25" bolt pattern and weigh 16 lbs each. I think the only thing that matches that PCD is older mustangs and contours and maybe something like an older saab. So my wheel choices are really limited - nothing that I think would look appropriate and save weight. I can probably get Minilite/Panasports etc that will work (and look great) but the lightest of these that I've seen is about 13 lbs. I'm thinking that Enkei 15X7 RPF1's (4x100) which weigh about 10 lbs each are the way to go. Seems to me that 3 lbs per wheel (compared to the panas/minis) on a lightweight relatively low powered vehicle is enough of a significant weight savings that it will make a measurable difference in acceleration time. If anyone knows of any other choices or has other suggestions I might consider PLEASE let me know!