BigBlock454-
There is a chance it will, and a chance it wont...
Post 87 14 bolts are always a gamble in terms of disc brakes. The 4 bolt flange distance and bolt pattern went through many slightly different renditions after 87, and in some years there were as many as 5 different bolt patters found. The only issue is that 4 bolt pattern and the spacing to the hub, so my suggestion would be to order the kit, and see if it goes right on or if it could be made to work with a little modification (die grinding out the bolt holes, or putting a washer or two between the bracket and the axle).
If there looks to be no way of modifying it, then we can exchange the brackets themselves for some weld-on brackets, and you can attach them to the axle that way.