Right im told that the basic engine is the same on all the above.
just different cams n diffs n turbos etc( bits that dont matter much to you)
Theres a arc which is a 207e which is 150bhp
the 207L Which is a z20net found in 9-3 vector
and 207r in the aero 210bhp.
Hope that helps n widens the search abit for you