Header Question

One of buddies at work has an f100 a 67 model he is putting in a 351w and would like know if there will be any type of issues with clearance or routing of any type of headers thanks for your help

I have a 71 with a 351W an AOD trans. I have not found any long tubes that will bolt in. I have'nt found any shorties yet either. The Windsor is taller and wider than the 302 so any 302 longtubes are going to be too short to clear the starter area of the bellhousing. All the shortires I have tried have hit my power-steering gear box. He he has manual steering he might be OK on shorties.
I tried a set of the el cheapos from advance and they came the closets to fitting but hit the starter area pretty bad
Clint
[addsig]