I think I'm going to definetly get the standard Carpet Knife and buy a "old skool" front end for it. Unless the Carpet Knife with the "retro-front end" is the same as the old skool front end. What replacement parts should I also order, I know I should get some parts for the front suspension. What front suspension parts break often? Do any other parts break very often or wear out very often that I should consider buying extras? I'm also going to get a foam bumper to try trimming to fit and also a plastic bumper to see how I like that. What extra parts like springs should I also get, should I buy springs for the center shock and a side spring set? What about a front spring set? Thanks again for all the help!