What did you end up doing to make them fit? I decided to drill some new holes in the stock brackets and bolted those to the seats... but I forgot to measure the distance between the tracks, and the summit seats are slightly narrower so they dont line up with the floorpan
I drilled holes in the stock rails and bolted them to the Summit seats, but had to weld the front bolts because I'm tall. The tracks will be very narrow but that's ok. Then take some flat 3/8 thick stock and bolt them to the factory seat tracks. Then drill holes where the studs and holes are on the floor.
I'll try to post pics tomorrow. You might have to raise the back of the driver's seat a little because it is on an incline so the further back the seat is, the lower it is. Move it forward, it ramps up higher.