Hello!
I have put on the auto-tech plastics belt-line and grill kits. I do not have the official belt-line kit though. I bought a slightly narrower chrome trim right from auto-tech, before their website was pulled. (They sold all kinds of trim, and for cheaper than PTWoody, who sells those kits now.
www.PTWoody.com ) At any rate, putting it on was easy. Even though it's plastic, its guaranteed, and I think it looks good. I have read where people have taped wooden dowel rods into the beltline groove to make sure it's straight, but I just eyeballed it. As far as your grill choice, that seemed pretty spendy for me for what you got. I think some of the others are more worth it, but thats just me. I'm more on a budget, so the plastic grill kit worked for me. I was kind of skeptical, but after I got done, it does look quite nice!! That's my 2 cents worth.
Happy cruizin!!!!