Good KB piston will run at .0015 to .002 so it would be easy to keep it tight. They do not expand very much and the high silcon will not let them scuff the cylinder walls. They can also be coated on the skirts to help out. 4" bore X 3.75" stroke = 283cid ;\) (rounded up)

seiscanecos74:
You might know that Edy is using another head for his engine. He is not going to use the stock MEFI head and intake but it will take a lot of money to sent it here so I'll keep saving untill I have enough money to get it here. That set up will be a great conversation piece here in the states since we do not have anything like it.