What should I do setup wise on my LSP for leisure?

And also, it has KHZ parts on it...I decided to put the alu arms back on it last night, and the rears went on w/o a hitch, but the fronts are a problem. First, how do I get the entire front bumper/skid off? And also, the things that are alu that the arms go between on the chassis and the pins slide thru on the outside of the arms, They seem like they're too close. What I mean is, is that I can't fit the arm in between them by a good margin. I would need to do some serious grinding here. What should I do? Thanks.