if you think about the total cost it normally ends up costing you more...
think of like how much you got your car for + the 2-2.5k or how much you can sell you car for compared to the price you can get a GT for and if thats less that 2-2.5k it is cheaper

if i got my car for 6k + 2k for the engine swap thats 8k total but if I can get a GT for 7.5k its cheaper
or if i sell my car for 5k and can go buy a GT for like 6.5k its cheaper

since you are doing it though... do wait to buy your springs

 

People say "get a GT" because there is more in a car than just the engine.... 8.8 locking rear differential, rear sway bar, better interior (most of the time), better wheels, stock h-pipe, etc. Also when you go to sell an actual GT, you'll get a few more grand ($) for it than a stock v6. In fact, putting a 4.6 in a 3.8 could hurt the value, cause insurance problems if you get in a crash, and so on.

ALSO, wasting that much time to put a POS 2 valve 4.6 is stupid. If you want a real v8 Mustang, get the 4 valve or forget about it. That's the only way you'll stand a chance against the almighty el es juan or any 4 cyl who thinks they are hell on wheels just because they are running 20 psi of boost or a 150 shot.

Do a supercharger or turbo and upgrade the rear end on the 3.8, you'll get more bang for your buck and you'll be unique.

 

+1....again

 

Great info...I'm thinking about getting lowering springs for my V6.