hello, im doing a 91-92 gfx conversion on my 88 GTA. i have to change the headlight assemblies because theyre specific to 91-92s. now i went o autozone and took a look at the replacment 4666 sealed beams that are supposedly what the 91-92 cars use. they have a weird plug on the back. now the 4656 bulbs next to them APPEAR to be the same with the exception of the plug on the back... it looks like what my car currently has. would i be able to use this bulb in place of the supposed 4666 bulb?? thanks for any info.