On another note I have been looking for plastic headlamps for years and have never found any. The car has to have headlamps. Someone has to have a source.
Have you checked motorcycle sources? I got an H4 bulb from a garage sale that was for a single bulb motorcycle. The location tabs needed some fiddling but with some needle nose pliers I got it to work. Honestly I don't think you need any location tabs. You should know where the top of the bulb is.
I think the reflector is plastic on the Auto Pal's. Still that's a savings over a traditional all glass bulb.
31387 All with 7" Headlight Bulb Assembly, Crystal plastic lens and Metal reflector, 7" diameter, with H4 dual element 12 Volt bulb, Fits all headlights with 7" bulb, These look cool!! (In Stock!) $35 ea.
