Finally got my headers from Accufab. George built me a Sweet set that are 1 3/4" stepped to 1 7/8" to work with my Windsor (427), Avenger Heads (stock port locations), Mcloed Bell-Housing and the QA1 K-Member. I was told that they will clear everything and Not hang down too low. Once we test fir them, we will be sending them to get Jet Hot Coated. Here they are: