I have a 67 B/B L-71 with the 3x2 intake manifold. I would appreciate any input on how to clean up the intake w/out removal and the usual bead blast etc. I've done that on my single four intakes or anytime I was rebuilding but in this case the engine doesn't need any work. Just getting back after a restoration and as you know these 3x2 intake don't have the open surface areas like a single four to clean up so any suggestions as usual will be appreciated as I'll be detailing.grr#33570