Another vote for L-T's. Mine were easy to install.Undo motor mounts and fan-shroud(If applicable) and jack it up, slide them in. Plugs are easy. I have to loosen pas. header to get starter out. I just have cheapo headman 1 5/8". The 1 3/4 would be better if you are moderatly modified.
My buddy had a PITA with his(Flow tech I think), plus they were 3 piece.
The worst thing on a Ford is the exhaust side so anything you can do to improve that is the ticket.
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82 Mercury Capri 302.
Comp. Cams
Tremec 3550
3.73's
12.8@106 N/A
Kevin's Capri