I can 100% guarantee, only 3 of 5 hols will line up, if you wanna just fit an 88 spec temporarily, just drill 3 holes, one for the stud in the centre and one on each side of that, on the flat section

if you scan through tony turbos thread in restorations section, there are pics on there of how I modified an 88 spec tailgate

also as apples suggests, when I fitted tonys up it was waxoiled around the holes, then siliconed around the joins, I also sprayed waxoil down the holes under the screw caps