Re: HI All, two not so simple questions.
Those engines do look good and the price is definitely good...
So far my best engines are using Dax bottom ends, mzmiami cylinders, fred head, modified dirt bike pipes, and the mikuni vm18 carb connected with the adapter sold by mzmiami.
The cylinders he sells have huge transfers, nice wide exhaust ports, and the intake ports are good sized too. The ones with the 40mm stud spacing have slightly smaller round intake ports which is good for doing your own port work, but the 32mm stud spacing cylinders do have some healthy intake ports so whichever spacing someone chooses, they both will perform just bolt on and go, but they'll save someone a lot of porting time since the ports are already so big.
I've bought 3 of the 40mm stud cylinders and 2 of the 32mm ones and they all look really nice with nice thick fins on the outside and huge ports on the inside...