Hey i have a 2V head that i am thinking of putting on the 170 motor in my XM however not sure if it will fit on. Will it?? Any problems with doing it?? i realise i don't stand to gain much from this upgrade but it's going to be a hell of a lot easier for me to do than going through all the crap i need to go through to have a larger motor bought and transported, rebuilt, resprayed and all the good gear bolted to it. maybe at a later date :) any help would be good. also any advise on getting the absolute most from the 170 would be tops too
Cheers
Ben Beck

Turn your 170 into a 250. Its easier. No substitue for cubes. What do you want to do with it??? Make a plan and stick to it, and make no changes, because this only stuffs up the package.