not to worry! it should just fit right in. i have never installed a 87-93 dash on a 86, but have seen it done. i'm assuming it will bolt right into the original holes. of course u will have to run all the wires and cables from the old one
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89 GT AOD w/ shift kit, B&M rachet shifter, Trickflow intake, Crane (E-type) cam, 70Tb, 75MAF, 1.6 Rockers, Pulleys, MAC headers and H-pipe, Dynomax mufflers, K&N, 3 core radiator, white face gauges, custom interior, cobra R rims
MY89GT