Have some parts left over from my old build. Here have a new set of dry pistons sleeves for you refreshed SR20det. They start at stock bore of 86mm and you can bore them to whatever size needed. If you want your newly built block to be bulletproof sleeves are the way to go. Big boost and big pistons need reinforcement. Recommend professional machine shop to install.
https://ibb.co/BNzZFfF
https://ibb.co/9hy3HGq
Cheapest you?re going to find these are going for over $500 new. Now you can have them for 400 to your door.