well these seats are from a 01, but the thing is i remember taking out my rear seats and these are identical, maybe slightly different in the rear as they dont fold down, but i remember having the 2 10mm bolts and 2 18mm bolts that bolt down the rear backing seat.

as for the front they look the same as when i pulled out my front seats once uppon a time. these where from a 2 door GTP aswell. i guess i'll test fit before they get upolstered.

 

Here's a couple threads on seat swaps the a few GP guys have done.
ClubGP Message Forum troubleshooting
****THIS ONE IS A MUST READ!!!****
ClubGP Message Forum troubleshooting

http://www.naioa.com/v2/modules.php?...topic&p=485450

 

all the 97-03 gp seats are same including 4 doors too. just giving you heads up that 97-03 gp back seats does not fold down like the monte so you going to have to find way to have the back part of the gp seats bolt down. i had tried the gp seats on my monte couple years ago that's why know its going to be a simple bolt on mods. i'll tried to down load some pics later.

 

just slapped inthe rear seat, and there is NO ISSUE! there is the "previsions" for the 4 steel hooks to slide in on the back side of the back back seat, so there is no need to use the 4 10mm bolts to bolt it in. the rest of the seats i'm going to try out now. the only problem i have is the black leather seats have a bit of a blue hue to them... pics soon

 

interested in pics!

 

Well, they bolt in no problem, that is a fact, how ever, they have a blue hue to them when they are in the interior, the seats are black yes, but when they are in my interior they look like they have a blue hue to them, so i'm not puttin ghtese in, i've sooner spend 400$ on a set of possibly 04+ GPX seats.

some pics



the rears fit good accept the side of the bottom cusion against the plastic side panel. the front look a bit small. i didnt bother snapping a pic as i put the passenger side seat in the driver side, and i dont have the other seat, and i cant move the car away from the fence.
IMO dont waste your time with the 97-03 seats, i'm going to find a 04+ set tomorrow