Depends if by "chrome ones", you mean chrome spokes or chrome rim. The '68 and back had chrome spokes and rim, so we know you do not want that style.

The '69/early 70's had chrome spokes with painted rim. Specialty Wheels makes those in 15x8.

If the '69/70's chrome spokes/painted rim are the chrome ones you do not want, then you are looking for the mid/late '70's style with silver/argent painted spokes and painted rim. I am not aware of those being made in 15x8.

http://www.specialtywheel.com/product-showcase/mopar/chrysler-road-wheel.html