Is it possible to get power windows and locks installed on a 92RS? If so how much could I expect to pay?

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1992 RS 3.1L
Mods:
K&N Drop-in filter

Mods to come:
New Plugs and wires(need advice on types)
Dynomax Cat Back
MSD GM Blaster Coil
Cold air intake
NEED OTHERS HELP ME!!!!

 

Just get new doors... really, they aren't expensive at all. That is what I am doing...
Later,
Douglas