I would buy a crossmember from fatmans or any of the other manufactures as there is alot of work to install the factory crossmembers,I am going that route with my 37 but I am going to use all the original controll arms and spindles to kee the cost down. I have not installed one yet but I hear that the aftermarket crossmembers are easier to install and they come with instrucions on where they are to be located in the frame. grin