Will these headers fit?

[bigdumbhick]

I'm looking to put headers on my old truck. 1971 GMC 307 auto-trans.

I found these on ebay http://tinylink.com/?ZACRMld5Sk but I don't know if they will fit. The angled plugs question is an unknown.

If they won't fit, does anybody have a lead on a headers that will fit that won't bankrupt me? (I'm currently unemployed)

Typically, I am doing this all ass-backwards. I just put dual exhausts (w/ turbo tubes) on. That's when I found out about cracks in my exhaust manifolds. So if I go with headers, I'll have to get the exhaust re-worked as well. It never ends.