The TP heads are similar to the 427 variety the port runs right through the pushrod, so there is a tube for it in the middle of the port, and the ports are literally round on the intake side. They are massive... lol and have a matched single plane dual quad intake. Its my understanding their failure on the track was due to they needed to rev to the moon to make power. Any additional info is appreciated. As this is all i have at my disposal, at this time. The end of the week i may be able to post pics of the actual parts though. I am still unsure if they are the race variety with the shaft mounted rockers, or the "street" version with pedestal mount.