Brian, It may have been this one:
Specialty Power Windows
2087 Colier Rd.
Forsyth, GA 31209
912-994-9248
See Kit Car Illustrated August, 2001 pgs. 68-71
If you want to have fun, find an older Saab 900 and take the wiper system out of it. The one above is a sort-of copy of this Lucas system. Like the ones in English cars, it uses a drive cable in a 5/16 steel brake tube and NO external moving parts. You cut and flare the tubing and clamp on a transmission where ever you want the wiper. The BIG difference is that it has knurls (for attaching the arm or arms) that is the size of standard American arms (not those little bittie things like MGs etc) and it has a much wider 165 degree sweep. They are sweet. Enzo at Finish Line/Moto-Lita America can sell you a switch or I can show you how to implement the park feature with two toggles.
Lynn