So I just grabbed this metrakit/airsal from treats. Casting looks good as well as the porting. I still plan on doing some light work to it: Open the exhaust port and polish it, knife the bridges and match third transfer to my case. Being that Airsal made it with metra porting they didnt put the boost window in the piston... Lazyness haha. My question is where should I line the piston up at in the cylinder to make my marks so I can cut the window in the piston. Do I line it up with the edge of the skirt or line it up with the edge of the cylinder bore of nikasil where the side cuts in the piston line up with the side cuts in the skirt. When lined up with the skirt edge all windows are clearly seen within the cylinder. When lined up with the nikasil edge and side ports, the inside ports are covered up about 1/2 way maybe a mm less than. Any and all advice or help would be greatly appreciated. Thx
