The dynatechs will fit the DSE sub with a LS and clear the steering shaft if you use the mounts that set the engine back! BUT they have very little ground clearance with car at a low ride height. I am looking into Stainless Works or DSE headers myself!
I've not seen the Stainless Works LS headers with the DSE sub. Has anyone used this combination?
I have pics of the DSE headers in the DSE sub and can click off a few pics for you if that would help--I can tell you they fit like they should and only slightly hang below the subframe at the collector flange. Ground clearance was a huge item for me---I was thinking shorty headers, but didn't want to give up the HP/TQ. I got mine for 2k---that's quite a grip for a set of headers, i'll be the first to agree.
Dont skimp on headers. Get the DSE set for their sub, just one less thing to worry about. I've made mistakes with headers before and it sucks bigtime. From ground clearance issues to redoing the exhaust.