Been a while since I've posted, I finally have some time to give my WC1 the attention it deserves. I would like to upgrade to the NE5 cylinder and while I do that I wanted to add some more hi performance parts to it. I currently have around 750 miles on the stock WC1 block, cylinder and head, and most of those miles were in the So. California climate and traffic with intake restrictor and exhaust baffle removed, I'm surprised it's still running! Question is, what can I do and what parts are still available? Is just simply switching to the NE5 cylinder and head going to give me any power increase over the stock WC1 cylinder and head?