150-160 in the 88GT/87GT. It's good for about 135-140mph on a warm day. Really goes to beat hell when it's -20* out though. Fastest run ever was on a pretty steep downhill on I80 in Iowa. Long stretch that had me using 5th!!!! with 2.73's cause I ran out of gear in 4th. If the tach was right (it was obviously wrong, lol), I was doing 172mph on H rated retreads. Ah to be young and completely stupid. I was probably doing 160, anyway. The 88 saw 140-150 quite regular I would say. I've only topped the 87 out a couple of times.
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