Bill - you're looking for Bosch RA1126 Quick Change Template Guide Adapter - they are available on Amazon Canada
https://www.amazon.ca/Bosch-RA1126-Change-Template-Adapter/dp/B005HPUP80
I cannot find a listing on Amazon.com and CPOTools.com shows them out of stock.
Edit: Sorry, I reread your post and you mentioned the quick change adapter - that is the RA1126,
but you also mention guide bushings - they are the RA1125. That's a 7 piece set (I have them, purchased fro CPO Tools last year) but they show them out of stock.
Amazon.com has them but listed at $140 (which is crazy) - https://www.amazon.com/Bosch-RA1125...osch+RA1125+7-Piece+Router+Template+Guide+Set
Amazon.ca has them at $48.90 Canadian - https://www.amazon.ca/Bosch-RA1125-...coding=UTF8&psc=1&refRID=4MEQS7MDD2M8MP2719F1
Here's the 8 piece set, which includes the quick change adapter on Amazon.com which is a lot cheaper (don't understand the discrepancy)
https://www.amazon.com/s/ref=nb_sb_...ords=Bosch+RA1128+8-Piece+Template+Guide+Set+
https://www.amazon.ca/Bosch-RA1126-Change-Template-Adapter/dp/B005HPUP80
I cannot find a listing on Amazon.com and CPOTools.com shows them out of stock.
Edit: Sorry, I reread your post and you mentioned the quick change adapter - that is the RA1126,
but you also mention guide bushings - they are the RA1125. That's a 7 piece set (I have them, purchased fro CPO Tools last year) but they show them out of stock.
Amazon.com has them but listed at $140 (which is crazy) - https://www.amazon.com/Bosch-RA1125...osch+RA1125+7-Piece+Router+Template+Guide+Set
Amazon.ca has them at $48.90 Canadian - https://www.amazon.ca/Bosch-RA1125-...coding=UTF8&psc=1&refRID=4MEQS7MDD2M8MP2719F1
Here's the 8 piece set, which includes the quick change adapter on Amazon.com which is a lot cheaper (don't understand the discrepancy)
https://www.amazon.com/s/ref=nb_sb_...ords=Bosch+RA1128+8-Piece+Template+Guide+Set+