Just a matter of economics. It isn't my engine and the owner isn't in position to buy a bunch of intakes just for testing. He doesn't want to run a Mod Man on his car so no point in buying one. I've run the Weiand TR before and it does peak pretty early with the long runners but I had one available so we used it. I tried to buy a Indy TR but they never returned my calls so eventually I gave up on that. The Indy TR would probably be the best intake for this engine but I that shipped has sailed as far as the next round of testing is concerned.