Mine has 8 sleeves in it, it was sitting outside for 15 years when my Dad discovered (the original VIN engine for my Kar). As I had 8 NOS std. bore piston and rod assemblies to install in it, we went std. bore.
[Blocked Image: http://home.comcast.net/~ruspen/Pics/a289_NOS_Piston_Rod_2.JPG]
It was then all squared back up and decked afterward.
If you would like to sleeve a block and you are in Michigan get a hold of me. I can set you up with my cousin who's machine shop did all the work on my engine, including resurrecting rotted out heads. Probably the best price. He is now located in Westland, MI for reference.
Regrets? My cousin's place used sleeves a little harder than I would have liked. Ring seating is taking a while, but leak down is slowly coming down. And I can fell it as the rings seat. Oil usage dropped drastically too.
If I was to do it again, I would opt for a softer sleeve. What they used are for 150,000 mile daily engines. Not 1500 mile a year cruisers.