I gave up on my FXR swingarm project and decided to go an easier route. I had an 05 FLHTC swingarm which was the H-D Electra Glide Standard or Classic I think.I think it was in '02 Harley beefed up their bagger swingarm after complaints about "Center Steering"! Anyhow these swingarms were much stronger and more robust than the earlier bagger swingarms and of course those on FXR's. My biggest criticism on the FXR swingarm was the 1"x2"x.125" rectangular tubing would over the years deform if you overtorqued your axle nut. That's not a problem on these new bagger swingarms because the axle mounts are made from solid steel forgings which are welded to the swingarm. I did some research on this conversion before I decided to do it. In addition to using one of the newer H-D Airstrike wheels with a one inch axle the new swingarm sports a new 4 piston caliper which was one of the best rear calipers the Motor Company ever issued. I've got one on my Dyna Super Glide and it's rear stopping power is phenomenal! Also years ago I'd foolishly converted my FXRC to a chain drive and I wanted to put the belt drive back on. Also the newer swingarm had a self aligning cammed surface on the axle which keeps your wheel from getting out of alignment when you put it back together.