[klayfish]

Tom,
Sounds to me also like your mind is already made up, but I'll throw my limited thoughts in too.

As has already been said, that 408 as it is should be more than enough to turn your tires into piles of rubber chunks. The car will be extremely fast as it is. If you're new to Cobras, you may want to seriously consider going naturally aspirated. Get used to it and get a good feel for it. Take it to the local drags and practice putting down the power the naturally aspirated 408 makes. Then if you're itching for more, put the blower on it.

My Cobra is a naturally aspirated 351W. I recently bought a '92 Mustang convertible to run on the open track. It's got a supercharged 302, pretty worked over. I absolutely love that motor!! I'm so glad to have it. But I've taken the car out on cool days, when the pavement is cool, and even in 2nd gear I had to feather the throttle, as I got some pretty good wheelspin. And the Mustang is probably 1200-1300lbs heavier than my Cobra.

If you do the supercharger right off, I think you'll love it, but be really, really careful with it.

Steve