for sale is a custom made hybrid intake manifold for a single cam the intake runners are from a d15b and has a f22 butterfly welded into it all ports have been gasket matched and runners aligned and polished top end performance is awesome butterfly can be open all the time just not removed or a gsr ecu can activate it with a little ecu work depending on your application 75.00 239 645 8522 check us out at myspace.com/239boost and also myspace.com/239chevyboyz we are a full custom shop and do it all