Just got a 1.8 JN code from a scrapyard. Everything looks well preserved, except the head which looks really porous andshould need around 2mm taken off its bottom side. Also found a head from a 1.6 Mk2 Golf which is in much better shape. Any differences between 1.6 and 1.8 heads? Because it would be easier just to swap heads than to try fixing a head in a bad shape.