No special tools. A couple of wrenches, a mallet, a dowel or something else to knock the pins out - and some cursing , and that's pretty much all you'll need.
I installed it myself. Basically all you have to do to install the SSQA - is to remove the existing bucket from the tractor - and install the QA onto the end of the loader arms. The new QA does use longer pins than the ones that are used to install the bucket - but the QA comes with them.
When I bought my tractor - I bought it with the pin-on style QA adapter. So I removed that to install this SSQA adapter. At the same time I ordered the SSQA adapter - I also the correct Kubot buckets to go with it. The adapter does appear to meet the SSQA standard - so you could use pretty much any bucket that has a standard SSQA setup on it - but the Kubota buckets are more lightweight than anything you're going to find for a skid steer so they don't suck up as much of the loader capacity as you would find a skid steer bucket does. The Kubota buckets are also not too expensive - if I remember correctly they were like $550 and $575 or something like that.
I got both the 54" bucket and the 60" bucket. I intend on using the 54" bucket for digging - it will likely get a tootbar mounted on it - or teeth permanently welded to it - and the 60" bucket is for clearing snow and carrying materials - etc.. I did not order the Kubota fork frame at this time because I've been talking to a local vendor about getting one of their fork frames made to go on this setup - and their frames are more versatile -and much less weighty than the Kubota frame is. Not sure if that will come to fruition - but we're working on it.
One thing to be aware of - is that the Kubota SSQA setup does weigh a big more than the pin-on style QA. The pin-on style QA adapter weighed in at 22 pounds for me, and the SSQA adapter weighed in at like 75 pounds.
So you're going to reduce your loader capacity some by going to either of these QA adapters. Depending on the shape of your existing buckets - you may or may not be able to adapt them to be used on the new SSQA adapter.
The new "SSQA" 60" bucket - and the old pin-on 60" bucket I have - are basically the exact same bucket - except one has the SSQA stuff on it - and the other has the pin-on brackets. You *could* make one bucket into the other by just welding on the appropriate bracketry. The "SSQA" 54" bucket and the old pin-on 54" bucket - are completely different however. The SSQA 54" bucket is basically just a narrower version of the 60" bucket - it has the same side profile. The old pin-on style 54" bucket however is a different bucket altogether - it's narrower and also not as tall as the pin-on 60" bucket. I don't believe this bucket could be adapted to be used on the SSQA because I don't believe it's tall enough to interface properly with the SSQA.
Some pics of the QA installed on the tractor: