I do not remember if you are running a stock front subframe or a manual transmission. If you are running the stock clip and manual trans the z-bar clearance can be a major issue. On my 66 the Stovebolt cast headers cleared the steering gear and the z-bar with no issues. If the Clifford headers are the older Chevy II specific headers for a 292 they too will work, although steering box clearance is very close. If the Cliffords are the new generic style measure carefully. I would believe they could interfere with the z-bar, but may clear an automatic. If you are using an aftermarket subframe,probably any thing will work.
