Opinions on various conversion kits.

After doing some research here and elsewhere, I've come up with the following list of front Disc Brake conversion kits that "should" retain the SBP and 14in wheels with original hubcaps. Which of these do the members here think is the best?

http://ssbrakes.com/i-10092518-disc...l-or-use-with-factory-power-booster-a153.html

http://www.doctordiff.com/10.95-front-disc-brake-kit.html

http://www.theramman.com/component/...76-4-0-small-bolt-circle-detail.html?Itemid=0

https://scarebird.com/index.php?route=product/product&path=64&product_id=143&limit=25

Thank you!

Paul