318 swap headers wont fit.

a few pics would help i think in seeing where the problem is.

it also depends on what brand and what partnumber they are how they fit,most of the less expensive headers have the steering centerlink going thru the driverside header

some headers where never designed for cars with powersteering.

its also most of the time easier to put the headers in before instaling the engine,just did that with a set of TTI 1 7/8" primary headers on a car with powersteering. but you will in most cases need to uninstal the starter and bolt it back in before the headers and centerlink are bolted on again unless you put the headers in place before lowering the engine into place.