#6138 1972 340 4 spd 800 cfm carb
passenger side exhaust manifold will be part# 3418624
drivers side exhaust manifold will be part # 3614367
so you found the build sheet for your demon in a parts car? is that what you are saying? if so that is pretty lucky to say the least. looks like you need white interior for the demon according to the sheet.
i would put that buld sheet into a plastic sleeve a.s.a.p. before it gets torn or ruined.