The Bobcat 763 is a bit older, so you need to check the flow rate on your specific model first. Try to look for attachments from companies like Bradco or the official Bobcat brand.
It's the 709 backhoe and used is your best option - here's a link to several BH 709 options for your 763. $4-5K not too $$ but if you need to use your SS you may want to look into a Mini Excavator.