My 347 was built by FordStrokers.com, and the heads were chosen to be able to build headers for them. The cam was made to work for my truck and those heads etc. Camshaft Innovations is about the best to get a matched set of custom cam and heads built for them. They are located in the same town as Ford Strokers, shipped to them to complete the build. They are the best performance for the given budget, call them both and have a budget in mind. I started with about a $4000 goal and ended up with about $4500 in my long block.
Select heads that can accept the headers you have or will buy, start there. Regards,
Don