.050 over is four times what your itr pistons are overzised....... .25mm over is about .010 over.... that guy is nutz to say you need to overbore that much.. and i wouldnt do it if youre going to run higher compression... id say stay with the itr oversized and take it to a GOOD machine shop... Hondas standards are VERY precice the walls shouldnt be that out of shape to get all crazy on... .25 should be plenty
good call eric weisco does make the rollerwaves! endyn just finishes them...