Just installed KKM and Flowmaster tuned exhaust (#17227 $160 from Jeg's) on 93 XLT 4x4 with 108k. Very pleased with the results! Acceleration much improved and best of all, MPG is up. Combined city/hwy=15 (before), 16.9 (after), hwy=17 (before), 21 (after) even cruising at 75mph. Took trip to...