Wilwood front kits 69 Barracuda

What is your goal? Why do you want to replace the (I'm assuming) factory Kelsey-Hayes calipers? If it is for weight reduction, maybe take a look at SSBC's aluminum calipers. They are supposedly direct replacements for the cast iron K-H calipers. I don't like that company, or its predecessor for a few reasons, but I have no beef with those calipers specifically.

Expensive, but less than a Wilwood kit. Available in black for $100 more.
https://ssbc-usa.com/products/a199-1?rq=yr_1968~mk_plymouth~md_barracuda~ha_base