Rene, this is exactly the set I have, but I haven't installed it yet. There are a few things worth mentioning though. First, they look awesome
I love the cam lock, though I do think it's a little bit too big (I was expecting something of smaller size).
The only "issues" you will run into are bolt size in the attachment bracket on the belt (it's large.. I think either 3/8" or 7/16" -- forgot now, but can check). So, you'll need to figure out a bushing as we use 1/4" bolts for seatbelts.
Another thing that needs to be considered is crotch strap bracket -- you just need to ensure that it fits in the mounting bracket during installation, so if you haven't installed the mounting bracket yet, you may wanna wait until you have the belts in hand.
PS. My seatbelt length is 55", not 40" as mentioned in the link you provided. This is a bit longer than 50" that was supposed to be standard on the set I was ordering.
That's about it.. but they are a good alternative to the more common Hooker harness (and Hooker ones are great too!).