I think those plastic devices that Syn talked about were mostly on the 2dr GPs. I know my 98 2dr GP GT did not have them. I think it was around the 2000+ year model that they started incorporating that bracket on the seats to keep the belt lower on the shoulder and not chokin ya. I have not seen any 4dr model GPs with that belt bracket on them. I think mostly because of the position of the belt in the 4drs is different than the position in the 2drs.
I had some of those padded PONTIAC belt pad things that went over the belt and I positioned it on my neck to give me the maximum comfort. It helped someone what, but didn't cure the problem entirely.
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