blacklsvtec24

ok so i have an ls/vtec motor in my eg coupe( b18b black and b16head) the block has been built a little, as in rods and pistons(not sure what type) i bout the motor built already buy a shop in missouri. and a buddy of mine also has an ls vtec, just a quick question on how many mile on average are people getting out of these motors if they are built correct and wel maintained, not drivin hard except maybe once every 3 months at the track.