silvertops had a sandwich plate with the injctors and fuel rail on a plenum could easly made to fit this as it would all be tube work
its a tricky afair realy as there is such a variation on whats fitted for orignal injection systems and all of thease would need looking into
i have a silver and a black top inlets and all the stuff is diffrent so it could be a real headache to sort
on the other hand if your thinking megasquirt then you can use anything you like realy couple that with a base map to suit what you made it could almost be plug and play
i hear a rover manifold from the old turbo twincam engine can be made to fit with a simple sandwich plate
would be an easy option i have no idea how easy thay are to find