1988 Factory Seat Bolt Hole Dimensions

If anyone has a factory seat outside of the car; would you be able to measure the bolt hole dimensions for the seat bracket to floor pan securement? I'm looking for length and width from hole center to hole center. I'm in the middle of discussions with Corbeau tech support to see if their 83-86 seat brackets will work in an 87-88. Thanks!

Measurements from driver's side power seat base:
NOTE; pictures show seat base upside down. The surfaces facing you go next to the floor pan. Measurements good to +/- 1/16th"
Holes for the front hold down bolts, in the seat frame are about 5/8" long (front to back) and 3/8" wide, side to side.

Front base to floor holes (these are rectangular) side to side, center to center: 14& 1/8th"


Rear base to floor,side to side, center to center on the holes: 13 & 7/8th". Note hole closest to trans tunnel is significantly bigger than hole closest to door as the bolts are different diameter.

Length front hole to back hole: Note back hole flanges are parallel to seat frame. Front hole flanges are angled. This makes it difficult to get an accurate front to rear on center measurement. See pictures.
Front hole to center of large diameter rear hole (closest to trans tunnel = 15"

Front hole to center of small rear hole, closest to door = 14 & 7/8"

Pete, you're the man! Thank you! I'm going to relay this to Corbeau tech and find out if the 83-86 seat brackets will work in the 87's and 88's

I don't see why they wouldn't. The seats and brackets are the same from 85.5 through 88. If the bracket fits an '86, it'll fit an '88.