So the Juki is your machine, and the frame is a Handi Quilter frame? Maybe this is what you are looking for:
http://www.icanhelpsew.com/juki-bundle.html
Looks like you have to call to find out about availability of the front-mount handles:
http://www.icanhelpsew.com/handihandles-mount.html
$129 if they have them:
http://www.icanhelpsew.com/handiquilter2.html
Your best bet is probably to put in a search on eBay. I found these, but they sold last month:
http://www.ebay.com/itm/Quilters-Han...-/290974817794
Also try posting a Wanted ad on the sewitsforsale Yahoo group (you have to create a Yahoo Id and join the group first).
Judging by this thread:
http://www.quiltingboard.com/main-f1...-t39193-2.html the company that made the front mount handles has been out of business since at least 2010 (not the Handi Quilter company, but rather the company that made the front mount frames).