easy enough, although low low 12's are probably more like.
10:1 440, ported iron or Alum heads, RPM intake 850DP, Headers, good ingnition system, 3800 stall, good shifting trans and 4.10's should get you really close to 11's and still decent on the street. Advancing the cam can help get you some bottom end as well. Of course better heads, more compression, expensive convert, will help even more.

oh and I had a .030 over 383 11:1, ported 915 heads, 509 cam (straight up), Torker II 750DP, 1 7/8 headers, MSD, 3800 stall 4.56's in a 68 Dart ran 11.86 w/ a very bad trans.