Restoring plastic tail light enclosures?

[Thinair]

I'm interested in restoring the plastic tail light enclosures on my recently acquired '65 Globe Trotter. They have developed cracks and in general have deteriorated, this aggravated by previous paint efforts that diminish the appearance of our wonderful aluminum bubble! Has anyone approached this task yet? I realize that it must be done in place, but having some exposure to rc aircraft, I've been imagining gel coated fiberglass overlays that would fit like a second skin... Does anyone have any ideas or thoughts here?

Thanks,

Chris