The key to retrofitting the swingarm would be the P/N of the frame since the front of the swingarm mates up to the frame. The axle size only affects the wheel. Back in the day, we bought wheels without the spacers, bearings etc in them and either set up the bearings ourselves or got the local shop to do it. If you can find a shop that still does this, you can knock the bearings and spacer out of a 3/4" axle wheel and have them set up for a 1" axle. OR, you can buy a different wheel already set up for 1" axles. Anyway, the swingarm is an 02 part number that has been upreved to an A because of the 1" axle. It WILL fit in your 02 frame. Then you have to deal with the wheel. Two different issues. Swingarm fit to frame and wheel fit to swingarm. Don't confuse the two.
B B