Ironically, I just posted that in Fackrell thread. Pick up (draft or FA) a starting NT, move Clark to DE in base. For obvious passing downs, Clark moved to NT. Clark-NT-Lowry with Keke backing up DE and Lancaster at backup NT is a decent DL and big improvement over last year. Conversely, You could get a new starting DE and keep Clark at NT, but that would seem more expensive. A front of Smith-Clark-NT-Lowry would be really hard to run against without giving up any pass rush to do so.