You make me dizzy jumping from issue to issue but then again I am easily confused. Here is a link to Jeg's page of fan shrouds. I am sure one will be close enough to work.
On the vapor lock issue use a insulating gasket like this one will help.
http://www.jegs.com/i/Holley/510/108-51/10002/-1 although any local parts store will have similar gaskets.