Thanks Bob, I thought that Ford used the single crimp on earlier year mustangs and the double crimp was used on the 1970 PS hoses. The single crimp hose has an engineering number on it but I have it in for plating right now. I bought both these hoses and my other NOS hoses many years ago, the double crimp is going on my car as I believe it has the correct engineering number. I will advise the single crimp number when its back from plating.