I think the only concern might be from the standpoint of name recognition. Spicer is part of Dana, a very well known company in the automotive/transportation industry. Moog is part of Federal Mogul. These companies are rivals in many areas--F-M did file bankruptcy last year, but they are still in business. The Moog name is well known thanks to marketing--especially the front fender shot of every NASCAR racer on the planet....
I do like some of the features of the Spicer/Perfect Circle parts--things like the molded blue polyurethane boot that is pre-crimped on the B-body upper ball joint. Much better than the Moog 3-piece design, in my opinion. There may be other features to like about these parts--here's some Spicer website info:
Another interesting thing is that ACDelco/GM is now offering the Spicer parts line in their all-brands suspension parts replacement program.
Here are some samplings of what is available for the B-body--note that all prices listed are COST as shown on GM Parts Direct website. You will need to add 10% to get an equivalent price for most "good" sources for these parts. I've provided both the GM number and ACDelco number for each item:
PRICES LISTED ARE NOT CURRENT
GM 88910018 tie rod, outer $17.21
ACD 45A0184, equivalent to Moog ES2020RL
GM 88910424 tie rod, inner $16.30
ACD 45A0590, equivalent to Moog ES2019RL
GM 88911150 center link $57.30
ACD 45B1098, equivalent to Moog DS899
GM 88911336 idler arm $20.84
ACD 45C1082, equivalent to Moog K6187
GM 88911387 ball joint, upper $15.21
ACD 45D0016, equivalent to Moog K5208
GM 88911522 ball joint, lower, 5/8" $21.46
ACD 45D2024, equivalent to Moog K6141
GM 88911524 ball joint, lower, 9/16" $17.03
ACD 45D2026, equivalent to Moog K6145
GM 88913896 upper arm offset shaft $33.84
ACD 45J0023, equivalent to Moog K6210
In the next few days, I'll put together a comprehensive list of B-body suspension parts that are available in the ACDelco "brand".
[ 01-30-2007, 09:40 PM: Message edited by: Navy Lifer ]