I've tasted some Torpedos, it's a very nice beer. I don't know about calling it an "IPA" though, it tastes more like an APA to me.
I detect a hint of chocolate malt (1 oz. or less), crystal, vienna malt, possibly some munich or carapils, and 2-raw.
Unfortunately the Sierra Nevada website is down, so I can't get any info from the site, but I would guess OG to be at ~1.070, IBU~65, SRM~6?
My first attempt to brew this (if I had the Citra hops) would be:
11 lbs 2-raw
1 lb crystal
2 lb vienna
8 oz. carapils
1 oz. chocolate malt
I don't know what IBU Citra has, but I would first try to hop it with 100% Citra with the schedule similar to the SN Pale Ale hopping schedule (including ~0.75oz. dry hop) and see what I get from that.
Anyways, I definitely will try to clone it, but first I want to wait for Citra hops to show up in the HB stores