[davepl]

Not until you replace some of that rubber fuel hose with steel! Grab a trans line from Schucks or something! Or better yet, any small block fuel line to get it close enough to the carb that you don't have so much rubber, particularly by the exhaust.

On the heater I'd say yes, with the only caveat being I've never had a vehicle with the setup that returned the heater flow to the rad instead of the water pump. Unless that serves some special purpose, and I can't imagine what, I'd think it's fine.