I would be interested to know if the Macs ones will work in the the Core-Trax extrusion.
I scored today on everything I needed and was even able to get it installed tonight. I found a local dealer (Rhino Linings) that was listed on the Core-Trax site, I was suprised to find out they had a bunch of the track in stock and 4 sets of the Load-Locks. I ended up getting a set of the Load-Locks for $9.85 and she threw in the other 3 sets for $120 including two 6 footers of the material. By no means the cheapest price but it was local and it was today. They have a bit more of the track but are out of the Load-Locks, sadly she made it sound like this was old stock and they are no longer ordering new stuff.
I cut the 6 footers to make 3 different sections along my bed rail, I would loved to have done continuous but my Bakkie Rack feet are in the way. To my surprise the bolt hole pattern already in my bed was identical to the mounts on the Core-Trax, although they skipped a hole.