Sadly, 88.5 is the transfer point where they switch to the larger flanges. There are two ways to fix it. One is to just drill out the flanges with new bolt up. The other is to just to replace the top half of your drive shaft with the larger mount. They use the same U-Joint, so you just need the upper flange. If you order a new flange, you can even have it drilled out to fit both the pre-88.5 flange and the post 88.5 flange.
When I put the Tracker diffs in my SJ I sent my drive shafts off to Hawk Suzuki and had them put different flanges on the end.