Thanks, GMONIZ. I guess I'll order it then. My 270 has the H head with bigger intake ports. Got any pics of what your doing with your engine? Mines still in the firetruck. As soon as I finish the job I'm on I'll be pulling it to clean, reseal, paint and install the parts I've bought. Will be installing this with GM 2 barrel TBI from 87 Pickup. Just dropped distributor off to machine point lobes down for reluctor wheel for HEI. Also going to build a double stainless intake for 2 one barrel TBIs to see which gives best power, fueling. Thanks again. Jim