Justin, the LN3 pulley does appear to remove in much the same way as above without the need to remove the PS pump and TAM [Captian Obvious says so cause you don't have one]. But, I must warn you that I snapped the pulley and part of the tensioner arm off in an attempt to just remove the pulley. Oooops!
By looking at the backside, the threads appear to be reverse to both Bill and me but I did take a pic and will post it when I get home so you can take a look at it too.
Replacement of the pulleys is complete. The tensioner pulley was metal but the idler pulley continues to be a plastic one. They were just under $20 each when purchased at a local Delco distributor. I also replaced both belts and the T-stat while I was at it. What an easy job to do when the motor is on the floor but it would be substantially more time consuming if it were in the car. Like MOS says, make sure you have a big bag of curse words handy cause you'll need 'em.