Well, the boost gauge on the dash is accurate, it jus doesn't have many marks...and it's SLOW. If you're going to be boosting over stock settings, I would recommend an aftermarket boost gauge, maybe in a pillar pod.

Odd, I could swear that they all came with ABS in 89....BUT, 89 is a crossover year, a lot of stuff was changed halfway through, I have the late 89 with the universal wiring harness.