I don't remember. My first thought was no, but looking at them I think you *MIGHT* be able to use W2-5 stuff. You'd have to do some machine work on the rockers because IIRC the valve centers are farther apart on the W7 which is why they come with 2.150 and 1.650 valves. I just don't think the exhaust needs to be that big. If you could get a 1.600 valve in there with the right valve job you could use a 2.200 intake valve and not crowd the valves any more than they already are.
