I have almost everything you mentioned, except that i use a F1 Intercooled Procharger.
Total investment has been probably over 30 grand, the list of mods is huge and there are still issues to be solved.
So the Cobra idea is really good, with the KB swap 03-04 Cobras get 600+ HP, not that bad, and you already have the strong internals and a reliable T56...plus, it will be a collectible, easier to sell even with the mods.
Anyway..back to your idea in case you want to go ahead with it:
- My GT has a DSS stroker kit (everything forged), the original block was used, zero problems so far. Heads are ported PIs, Cams are SHM, intake is Foxlake P51, BBK TB, SCT 90mm MAF.
Engine is pretty strong, my guess is that it makes around 350+ FWHP without boost, but it is hard to tell without a dyno test.
Fuel is delivered by two 03 Cobra pumps, tank has sump, fuel lines and fuel rails upgraded, injectors are 60lbs.
Foced induction using a 3 core race intercooler, F1 Procharger with a custom 8 rib setup and ATI race bypass valve.
Now for the numbers: 625 RWHP when running with small pulley and close to 20 psi of boost (still needs tuning).
512 RWHP using larger pulley, around 12 psi. (current setup)
So...if you use a Turbo setup...i think you will be over 700 RWHP.. and then you will need more cash to make it last
The nice thing about Turbos is that you can easily change the boost levels, turn a knob and you are set.