I am in process of changing from an auto trans. to a muncie 4-speed.Is there a difference inthe crossmembers of an auto car verses a manual trans.car.I've seen 4sp.crossmembers advertised on e-bay and was wondering what the difference is ,if any.Thanks,griffman300@sbcglobal.net ps.my car is a 1965 300 deluxe 2dr.sedan