Now this one ain't easy....(Solved...RC45)
 

http://images5.theimagehosting.com/wholecar.jpg
Start guessing....

EDIT - Here is the whole car.....a good clue is on the bonnett.....

i can't find anything that matches those headlights :?

looks like a 68 mustang fastback modified to some weird thing :P

Well i dunno if it'll console u,but ure faaaar off...

something french....citroen

notice the :P

Well, if no one tries/guesses to the end of tomorrow, the whole car will be up...

pantera

it isnt italian ..... is it ...

alfa?

It somehow reminds me of a Saab Sonett.

It was a special issue car, but not exactly modified.....
No it's not italian (huge clue), and it's not a saab...although that was quite an "educated" guess..

Datsun

There appears to be a front quarter window infront of the driver's window which no Datsun ever had.

The body style looks like the 70's Z cars but the frontend/headlights looks more like the 83-89 300ZX.

Not something Nissan/Datsun ever did.

it looks like Jag, maybe E type modification