1973mustanggrande

ok, so im rebuilding my 302 engine soon, i have a few questions about the gt40p heads.
i found a set, used, for $200, they seem to be in good cond. and not messed with.
is it a good deal?
would they fit on my 73' 302?
would i have to use anything special during the rebuild?
any ideas for what to use during the rebuild as far as cam, headers, ect..ect..?

thanks much,
jake

rmodel65

the gt40 P heads require special headers