Perv, check out the harmonic balancer, that may be the proble. The stock unit is not very good, there made out of steel, with an aluminum bushing pressed over that steel section, once I looked at that piece, I instantly called BHJ, a sweet piece I must say.
I'm running ASP's on my '95 WITH NO trouble at all. I have since boughed a set of the MARCH sets from one guy who got them on the group buy, then sold his SC.
I also had an alternator problem, but no big deal, I was running FULL stereo in the winter(CANADA). So with the weather dipping down around -20, i was having the lights dim a little at stop lights, but that would be with the wipers on, heat cranked, lights, stereo cranked up. So you can see why that was happening to me.
Lost boost, hm, didn't happen to me, but like you said,, maybe something else.