Yes there is a forsale section. Near the bottom of the page. 4 category down says vehicle sales. Within there you should see another section specifically for LS1 vehicles which is what you want. Best of luck!
__________________ If its cheap and reliable it aint fast,
If its fast and cheap it aint reliable,
If its fast and reliable it aint cheap
!BitchInPassengerSeat - My best Mod so far