Giving the dual pattern lobes a thought..... Might be a good way to do a ghetto "V-tec" type setup. Further isolate the runners in the T-vis head, enlarge the secondary runner and T-vis butterfly and grin the longer duration onto the T-vis side cam lobe. Could work. I've had the idea to install a divider past the T-vis into the intake port to reduce turbulence in the port past the T-vis. The ports are really poorly matched going from the 2 port manifold runner to an open chamber intake port. Probably be good for the other various T-vis applications as well. Biggest problem would be the injector though. Having a single injector centered in the port would hinder the installation of a full length divider and hold a requirement for flow to both valves to fully employ the fuel injected. An option would be to plug the injector port in the head and install the injectors in the manifold runners, 8 injectors on T-vis manifold and a new ECU with the proper tuning. Or, run put the injector in the primary T-vis port and inject all the fuel into one runner and keep the other runner dry. The ports would have to be tuned for swirls characteristics that would mix the rich and dry charges in the cylinder. Coupled with a dual pattern cam? Wish I had a bucket of money to play with these ideas.