Depends on your skills. You can buy the QA head for the FEL arms for around $350. If you have the skills you can then modify your existing bucket pretty easily. If you don't have those skills a metal fab shop can do it for you. If you don't have one of those around you'd hafta buy a QA bucket which would be the most expensive route. A few minutes on Google would tell you the cost of a bucket. And the cost of the QA head if you search.