The Super Kaos 40 I have is 21 yrs old and is a Bridi Hobby Enterprises kit. Those mounts that came with them were nice mounts and that is what the BHE on them is. Can't remember the name but I found an adjustable mount on Tower's site with the same square hole pattern. Says it is the same as a MM mount. The Vagabond I have on the board is a Bridi Aircraft Designs kit. Neither one is a Tower kit. Interestly I have a Warlord 40 and on the the plans there is a sticker that reads Bridi Aircraft Designs but under it it reads Model Aircraft Designs with no mention of the Bridi name.

The original Kaos probably had a 60" wing span since it was a 60 sized plane. The Killer Chaos 60 that I still have in the box has a wing span of 62 1/2". Seems like that was the rule of thumb for the older pattern planes. 60 size was around 60" and 40 size was around 50"