Clutch Linkage

Anyone on here installed a 400 low deck in a 66 Barracuda with a 4 speed? I talked to Brewers and the guy said they don’t know what linkage I need to connect my A833. Will be running B body HP manifolds if that helps.
That isn't an easy car to build. Are you sure you want to take on that project? Do you have much car building experience? You might want to go with a small block in a '66 unless you have lots of time, money, tools and talent. Or use a 727 transmission. Having to build everything from scratch gets old after a while. I know, I do it all day long.