thats interesting, i assume you'll have to lower the ports a lil' bit? i cant remember haven't built with an A55 cylinder in years but its only 1mm off so shouldn't be a big deal.
I know 1.3 is the dimension puch/tomos deck height is different but i cant remember which one is taller and which one is shorter. I think the puch is taller, the piston is 1.3 down from deck when you put a tomos cylinder on a puch, does that sound right?
so it might end up with the piston .8 mm from deck at TDC and 1.8 mm below the ports at BDC? this is all too much math for me to do in my head right now, interested to see results.