Use a table ban saw to hack off the 340 piston crown .
Yeah, It's a good feeling if when it's all done it runs great & you have a sense of having accomplished what everyone said can't be done...
But if at the end you saved a few $$$ over having a shop get involved but it doesn't run right or for very long... Well you might as well just burn the cash and save yourself some skinned knuckles...
I've done plenty of projects on the cheap, but I also have tools & experience on my side...
But when I was younger all I had was ideas & energy.. Kinda like Jesse...