I have an 8-R head inthe backyard. Search the site for the difference between an 18-r and an 8-r head. As I recall, they are just a few millimeters difference.
thanks Whysmee... yah I tried contacting those guys , they dont respond.. I think I found someone here to make in the states .. hopefully it works out Lostandconfused > I am looking for Headers, and I think 8r head the same physically on the outside, bottom block has smaller pistons vs 18rc... but please dont take my word for it