onefornow:
Weld that split metal or replace the entire inner fender. Do a good job, whatever method you choose, because the inner fender is an important structural piece that ties together the firewall/windshield cowl to the radiator support.
Also, that "bracket" you refer to (it's about 18 inches long) that goes from the radiator support/cowl to the inner fender/shock tower must be welded to the shock tower securely. It is welded to the shock tower, not the inner fender sheet metal. The shock tower metal is a much thicker gauge metal than the inner fender sheet metal.
Larry