Porting one is no where near a jam manifold bud I had one and the runners and that are at least twice the size of a standard or ported oem manifold I have pics of the difference it's mental like There like hens teeth I got mine from uksc mate for 300 delivered
I have a JAM Manifold, I also have a CT-9 power-up kit (with manifold) that I want to put on, so I am essentially swapping my JAM for my power-up manifold, If you would like to buy my JAM then I can use the money to do the swap and give you the manifold, once it's off the car.