GPS sender for speedometer

So tucked under the end of the pad should be ok? I actually had thought about the factory stereo speaker location in the center of the dash but that wouldn’t work under the metal dash frame. I wasn’t aware of the void above the glove box, I’ll have to look into that. I’d like it to be as little noticeable as possible. Do you mind showing me pictures of the two that you mentioned? Thanks.

The vehicles I was speaking of were not A-bodies, so you'll probably find something different under your dash pad. But otherwise, yes, the pad itself will not block GPS signals; it may attenuate the signal strength slightly, but not enough to cause any problems. But covering the antenna with metal is no bueno.