[jhv48]

Here's one for you mechanics and do it yourself guys.

About How many hours should it take an experienced mechanic and a well equipped shop to R&R a small block ford engine in an SPF cobra?

The reason I ask is I am going to have to pay a shop to R&R my engine and I have gotten estimates anywhere from 4 to 25 hours. And since I'm paying shop rates, I want to better arm myself before I try to negotiate with them.
I figure you guys have pulled more cobra engines than Carroll Shelby ever did.