satellite engine in a duster, advice?

I would send you a driver's side and passenger side manifold for a 318 a body for free if you still need one or both. Just pay the shipping.
I think the b body passenger side manifold is the same BTW.
Cheap headers are a pain in the a$$, especially if you have power steering. Be prepared to swear a lot, ding tubes, etc. and swear again! Been there, done that.
So either save up for some Doug's or TTI's or use stock manifolds IMHO.
I have at least 10 sets of manifolds or more, they are not hard to come by!
Where do you live?
Let me know if you want them, pm me if interested.