I believe this car used to belong to a customer in Birmingham, i'm not sure which logos exactly you talk about on the rear, I have a suspicion you might be thinking of some that are also on the flip coloured car, if you are I think they were made by a company called liquid art, from memory a car set was about £50? I might have some details deep in my notes somewhere, would have to try and dig it out for you.
What info are you after on the grill? the type of mesh?
As for the headlights, they're standard parts available from us, from looking at my photo of the car it looks like the 5 3/4" lights with our "sugar scoops" painted black and the standard lenses.
Hope this helps.