You're right...this will be a job to remember!
The outer bearing is pressed onto the spindle, and they are usually REALLY tight. The inner bearing, by the flange, is not normally the problem with dis-assembling the set-up. IMO, it is MUCH easier to take the t-arm off, and work on the bearings out in the open. You can damage the spindle support when the outer bearing is stubborn, if you're not careful. They make a "press" tool, that is supposed to be able to press the spindle out of the housing in the car, but most folks I've talked to that used one say it ain't worth crap. The BEST way is to take the t-arm off, then dis-assemble the spindle support from the t-arm, and then press the spindle out of the support with a hydraulic press. My .02

Thanx!

The spindle support IS bolted to the t-arm, but you have to remove the brake rotor to get to the nuts. The rotors ARE riveted from the factory, but if yours have ever been off, the rivets have been drilled out. If you see rivets in the rotor on your car, you'll need to drill them out first, or you'll just have to press the spindle out with the support still attached to the t-arm...not really the best solution, IMO.

To remove the spring, place a jack under it at the very end, as close to the bolt as you can get it. You need some sort of safety device to keep the jack from slipping off the spring as you lower it. I use a c-clamp, but vice-grips work also. Just be careful lowering the spring end.

 Let's see if I have this right. The rivets go through the hub and rotor into the spindle flange. The lug bolts (studs) are actually attached to the spindle flange. Once the rivet heads are drilled the hub and rotor will come off leaving the lug bolts still attached to the flange.   

Unbolt your brake caliper, you will have to take off the brake line to remove it, I'm not sure if a 81 has a steel line or a rubber one. My car has a steel line. If it doesn't have rivets holding the rotor on...then pull the rotor off. Should pull off easy if it doesn't have any rivets holding it on. This is a job I have to do pretty soon also.
Good luck

[QUOTE=jimiam] Thanx bunches. That was kinda what I thought but wanted some words from the expericed. Everything I've read says the spindle support is bolted but these appear to be rivited.

 Guess my next step will be to disconnect the spring on that one side. I presume I'll use a jack to relieve the tension, remove the nut from the "support rod ?" then slowly lower the jack. Sound right to you?

 BTW: Really nice '74![/QUOTE]

 Yep, it's all original stuff back there. Metal lines, rivets, etc. Drilled the rivets this afternoon. Pulled the rotor and emergency brake components then the shocks. I hosed the nuts at the strut rod and spring down good with penetrating oil and will take those off tomorrow. The pivot bolt at the front of the t-arm looks like it's gonna be tuff. I'm sure I can get it out ok, but getting it back in may prove difficult. I'm not sure I can get my hand back there to start the bolt back in. This is a real concern for me right now.