I have a friend who is trying to sell me ther 70 GTX that was his brothers that died last year. After some time they have decided to get rid of it and dont know what its worth. I am new to the Mopar world. It is not in very good mechanical shape and a lot of things have been rigged.It is a RS23UO GTX with a E86 engine on the tag. It is Yellow now but originally a EF8(Green) with a black top. it also has a D32 727 autralian auto trans. The car is rough but all there. Not sure if the engine is the original. Not sure where the casting #s are. I want to be fair with him and dont really know where to check to see what the car might be worth.