what headers to use

i have a 85 chevy stockfloored i want to run hedman elite shorty headers does any one remember what part number they used ive seen a couple different trucks with them hedmans told me that you have to just see if they fit. and said they didnt have measurements any help is appreciated thanks

i used one for a 67 camaro they work good

do you remember what part number you used when you ordered them