Advice on stroker build with cracked cylinder

The crack you've pictured is not an integrity concern. Ones by head bolt holes or near the base of the cylinder can be an issue. Use something "meaty"View attachment 1715206690 View attachment 1715206691

Wrong^^^ Do not use a 1/8" thick sleeve if you don't have to. Use a 3/32" wall and don't bore more of the parent cylinder wall than you have to. J.Rob