I would say that would be the best $1,700.00 (approx) ya have spent for a while. We converted all three of our 635's. NO MORE BROKEN GUARDS to fix EVERY morning on all 3 heads! Honestly can't remember last time I changed a gaurd on the SCH roller guide bar.  No more daily tightning of the hold downs!  Great set up  for sure. Let us know what ya do. Have a safe and profitable day!