Wow! Does the blue print incicate a raised voice???
The sign of someone with an engineering bent is to use the available information and find the easiest way to solve the dilema, anyone c an make it more complicated. So that is to change pistons and if you need to overbore, you already needed that and can you possibly show me or anyone where the 194 head does work better?? If it does I'd like to know, and what else was done to it to make it work.
