Really Dawa,you just got to hawaii and the sun is frying your brain or your smoking to much Pakalolo,620's suck i mean are nice trucks and why on earth would you want to put a 620 grill on a 521,say what you want haters but 620's are dime a dozen,they even make cheap china parts for them.That is all. And last i remember the last three shows the 521's beat out the 620's.hahahaha