When I do the intake swap I will most likely get a heat kit for the fentons for a 216 but would like to find a nicely done split manifold,I seen a split manifold with a 261 that was for sale on the HAMB that looked great and was in two pieces with a flange area from another manifold welded to the rear section that I would love to have. All the split manifolds look a little hokey to me and I did have one before I installed the fentons but it was a rigged mess,what I really want is a corvette split manifold but they are pricey and I would be stuck with a 235 intake that makes the carb lean.