Specs please

As for the intake and carb, I would go with a two barrel intake with a two barrel holley...350 cfm. Depending on other factors you may be able to use a 500 cfm two barrel holley. Definetly go to a bigger exhaust. Over on slantsix.org a guy (duster idiot) posted a thread, search "beyond the supersix" where he detailed how he did it. Said it really woke up his engine. I picked up a 7448 holley to do the conversion.