A Calif. BT seller offers to paint manifold for an added $50.  It seems likely they would be experienced in any required prep, etc., and thus maybe worth it (?).  
Just wondering if anyone has dealt with them?  Their descriptions & reviews seem quite positive, though over $700 IS pricey.  While I likely won’t put the manifold into service anytime soon, I worry about future availability (not to mention inflation).  In fact, I may not upgrade to a larger carb. yet, even then, so I wonder if the available conversion spacers work well in reverse (teapot on BT)?

6 VOLTS/POS. GRD. NW INDIANA