Header choices

[Shak]

First off, thank you all for the guidance and help this site has provided. Without it, my truck would still be in a million pieces. My 350 crate engine and 700R4 transmission should arrive soon, and I am having a tough time finding information on the best type of headers to run. The engine will be in the forward mount position on my 67. It has a 4 inch drop up front, with 6 inch drop out back. I'd like to avoid frame and ground clearance issues, and don't mind spending the money for a quality set of headers. Any suggestions would be great. Thanks again, you guys and gals are awesome.