A complete "strip down and part out" on a 99/01 cobra would yield about $3000 to $4000 give or take, but that's if you sold every good piece individually. It would take some time and it would be up to you on whether the $1k to $2k profit (after your initial investment is taken into consideration) would be worth the hassle.
The interior is basically the same as the GT for the most part, which the major exceptions being the airbag cover, the speedo cluster, and the seats. The various interior trim pieces will get you a few hundred combined. The engine isn't worth much if it threw a rod but you could probably strip it down and sell the good parts and get a few hundred from things like the intake manifold, plenum lid, coolant reservoir, etc. You'll get a little for the ECU and wiring harnesses if you can remove them all in tact. The rest will be pretty hit and miss. It will be a matter of finding the right people at the right time who need things like: fenders, doors, trunk lid, hood, etc, etc.
These pieces will bring you the most $$$ and should sell pretty quick:
- Tail lights (if they're still OEM)
- IRS
- Wheels/Tires
- Seats
- Tranny
- Brake Components
