There is a guy locally who is selling a front disc brake set up the details are as follows.

Complete 11-inch front disc brake setup. This includes spindles, discs, calipers, dust covers and all the bolts. $175

Would this set up work on my 70 coupe? What are some of the pitfalls of doing a front disc brake swap? What will work for this swap?

 

What's it from? If it's from a 65-70 Mustang, yes, it should bolt up with the proper caliper bracket (which may or may not be included). That said, used components often need to be rebuilt/replaced. Personally, I'd save up for a kit from http://www.discbrakeswap.com. I put one on my car and I'm very happy with it.

 

I also have the CSRP Kit and it works great.