Ok guys, i just got my b18b block in. My plan is to put this into a 98 civic ex, 5 speed. Right now i'm looking at pistons/rods, etc. My goal is 300hp at the wheels or hopefully atleast. I am wondering if it is a must to have the block sleeved and bored out. Or is it possible to make that in stock bore block with stock sleeves? Or is it really worth the 600 bucks for sleevs and 700 to have them put in and bored out to 84mm. I plan on running high hp turbo's and be tuned for nitrous. Let me know what you think and or any suggestions you might have. Also if you think the stock sleeves are sufficient how much do you think the stock block can handle?