engine combination

You are correct that a properly tuned 360/380 hp Magnum crate, drivetrain & chassis can get into the 11's, but it's not easy. Hot Rod(?) magazine did a crate shootout between the big 3, and got a 360/360hp Commando equipped Duster into the high 11's with a lot of bolt-on work.

Yup, that was Hot Rod Magazine in 1993. The Duster didn't go faster than 12.17 @110 (corrected or altitude) though.