There were a few minor changes, but not significant. The biggest killer is the ECU. A chip does help if it is simply reprogrammed to early FOX GT A9L specs. Don't bother with tunes for high-octane on a low-compression, stock engine.

Basic upgrades for more pep: Gears, Exhaust (unequal shorty headers, 2-1/2" X or H-pipe, and cat--back), street oriented under-drive pulleys, and induction upgrades. A quality shifter liek a Pro-5.0 or Steeda is very nice to have on the manual tranny too.

As for the mileage, those 5.0's run forver if treated right. I rebuilt mine at 225,000, and although it used a little oil, the thing was in great shape. In fact, it probably would have survived another 100,000 with no problems, but I wanted more power.

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Dave
\'87 5.0 LX Hatch, 5-speed
Maximum Motorsports suspension
Cobra brakes
CHP 347