Your Thoughts and Feelings on Dougs headers

I heard that Dougs headers are basically the same design as TTI, but can be bought a heck of a lot cheaper though. I am just curious to know what y'alls thoughts and feelings were on these headers and what type of problems y'all have encountered with installation and usage. I'm wanting a set for my '74 duster and will be bolted to a 360. Thanks for any info !!

Aaron