Update: With vehicle on the floor, checked ride height and it's within limits of the FSM specs. (std. susp., incl. Sub.); also measured left and right sides from floor to lip of wheel well (same). There's approx. 1 3/4" between bump stop and UCA. Loosened strut rod nuts to check for metal sleeve between bushings (no sleeve, which is correct per FPC) and left them loose. Removed left and right front upper shock absorber mount nuts and jounced front end (now has "spring" and moves freely). Jacked it up and removed the Comp. Eng. shocks and put the Gabriel's back on, but didn't tighten upper mount nuts (both brands of shocks have the same comp. and ext. dimensions). While the front wheels are off, I'll replace the Generals with the Coopers to match the rears. During reassembly, I'll jounce the front end after each step. Before I tighten/torque (30 ft. lbs. per FSM) the strut rod nuts with the vehicle on the ground, I'll loosen the '62 sway bar rear attach points to prevent any interference.
Side note: Per a previous post, I have p/n 776 and 777 (date code '71) .88" dia. t/bars, which are correct per the FPC (std. susp., Sub.). They were installed about 6 years ago (I assume they're used). Could they have lost some "spring" after 49 years? The "T/bar App. Chart" lists these p/n bars for "Most 2-bbl. V8's." It also lists .90" for 4-bbl. 383, 426 Wedge and .925" for 440, 426 Hemi. Since I have a 440, should I get larger and newer t/bars?
Thanks to everyone for the input. I'll let you know the final result.