440 intake manifold info needed

myfreind kris has an awesome 68 GTS , rightnowit has a m-1 intake on it , but it is too tall for the original hood so he is running a 6 pack hood . is any 1 running this 440 combo in a 68 GTs with an original head , and if so what intake are you running for max performance and stillfitunder original hood pmme please Jon thanks Gr8 DARTS OF FIRE It is 1 very nice looking ride BLACK WITH TRU FLAME