Lots of strokers in here!
One of the nice things about Cobras is that you can put almost any motor/trans in one. A lot of mfg's make kits for a variety of motors. The problem with the mountain motors is that there is very little clearance in the hoodline. To use a motor like this, say a Kaase, you'd have to run a pretty big hood scoop...it has been done and the results vary from car to car. Take a look thru the galleries, and you can see quite a few variations to give you an idea of what I mean. Good luck!