Need some help.....On deciding

Basically Im now in the military( MP) and I got a hefty amount for a sign on bonus.I currently have a 2002 Dodge Ram and a 1998 cobra I sold my bike. So anyways Im going to invest/put away some money.But..........

Im selling my truck before I leave and the cobra is staying in the family probably going to my sister or brother or cousin dunno. So Im going to treat myself to a new car when I come home.

These are my Ideas for now.

03 Cobra if I can find a low mileage unmolested one which I plan on heavily modding

06 str8 300 strap a bottle to it with some boltons

06 GTO Very undecided on auto or manual going to do boltons spray

06 srt8 charger strap a bottle to it with some boltons

also was looking at some vettes but doubt I will get one to many drawbacks fr me

HELP!