Protective Coat over Dupli-color Vinyl & Fabric Paint

[Triwolf]

So I have painted the upper portion of my interior door panels using Dupli-color Vinyl $ Fabric Paint. They look great, but none of the auto stores are able to tell me which clear coat paint to use as a protective layer.
I sent an email message to the company for assistance, but have yet to hear from them.
The side of the paint can gives no suggestions and neither does the Dupli-color website. Does anyone have any suggestions or knowledge of what types of paint would work? (Dupli-Color lacquers,Dupli-Color enamels)
I know there are other threads concerning this type of project, but none of the ones I saw indicated a particular brand of clear coat paint.

--Thanks

[detailstation]

dupli-color clear coat seems to be what everyone else use's and it worked well for me.

[Triwolf]

Any idea if that is their lacquer or their enamel clear coat?