Dougs headers idiot tech support
Been there done that on the early-a with a 4-speed. Yep ya gotta modify. Thank goodness for Brewer's Performance. They helped out a bunch with all the dfferent bellhousings and brackets that are out there for the 4-speed setups. It's worth give them a call if you have any other problems. Of course they area business and will want to selll ya something. A+ quality parts and advice IMO. Goodluck