poil, you are a godsend.
lol not very far. i've heard rumors of zzp using basically every part they make with a 3800 and kept it naturally aspirated (not super- or turbocharged) and don't think they made it to 13's. maybe 280 hp.
KR stands for knock retard. i'll find the link for that too, but basically it's when the air/fuel mix in your cylinder explodes before the spark plug ignites, forcing down on the piston while it's still going up. it's what kills motors.