Originally Posted by IEAT50S

There are no impalas with intercepter packages...the intercepter package is a ford crown vic package. Thats like saying a intercepter camaro, they don't exist but a B4C camaro (chevy police pkg) does.

What you are describing is more then likely a caprice with the LT1 engine in it, they were used as police cars and basically the same thing as an impala except the impala's were nicer and more sporty.