250 help

[Wookiee]

I'm working on my buddys '68 c-10 with a 250 and took the manifolds off to fix a leak. I found out the spring loaded diverter in the exhaust not only has a busted spring, but also the flap had been broken loose from the shaft. How important is this for pre-heating the intake? Can I just remove it and plug the hole? Roll it down the hill with a flaming rag in the filler neck? Or does he need to come off the coin to replace it? I appreciate any input.



P.S. Just kidding about the flaming rag. For now.