Re: 2.8 Which muffler ?
One word of advice don't use PaceSetter JUNK! I would go for a bigger 21/4" or
21/2" pipe Cat -back and a straight through(Turbo) or chambered one like a Hooker Aero chamber which are cheaper than Flowmasters. You could also use a resonator tip with a bigger diameter to give it a rumble. It worked with my 4.3,
my Baja has a burned-out glasspack(Pissed off bumble bee)so I don't know how they sound on a 2.8.
1989 S-10 4x4 355
1989 S-Blazer 4x4 4.3
1990 S-10 4x4 Baja 2.8 5 speed