Crate Motor

I couldn't find the 435 hp listing in the short block section at BluePrint's website. Having said that, you have a 340 w 2.02" intake valves presumably. There will always be car people who value #'s matching, especially for factory 4bbl cars. You could freshen it up w a valve job on the heads and add nice headers like Doug's, more intake and carb, and a cam for less than or close to the short block and have the best of both.