I agree with the other posters. I did mine and it is essential to set it up correctly for a good result. The link to the 429 mega site is a good guide. However I found that the kit I purchased from Graphics Express, arguably the best kit out there as it is made from the exact same material as the original 3M stripes, did differ on some of the measurements indicated on the website. Whatever kit you chose is up to you and your budget, but at first I bought a stripe kit from NPD, I forget the brand, but when my paint guy tried to apply the trunk stripe, the material was too thin, wrong sheen and had missing glue in spots. That kit got scrapped. I then found online, Graphics Express from Inverness FL. Their kit as mentioned is the correct Matte finish. I ordered directly and found these people to be great to work with, very helpful.
As for putting the stripes on, I tried tape, but the flare on the rear quarter interfered with the straight line I was aiming for. I too used a laser by jacking the back end till I got the line I needed. As mentioned, start with the front piece, get it right first. Use Ultra Dawn Original dish soap, 1 tablespoon to 1 gallon of water, no guessing, no substitute!!, use a spray bottle. If you bought this kit, you have these instructions. Next is the rear stripe. It sets up 1/4" above the marker light and should blend in to the very start of the radius. Positioning of these two set you up for the rest of the stripe. Keep it wet till you have it all in line, then squeegee out the water. TAKE your time and you'll get a great looking job. I hope my experience helps, only done it once, but this is the way I would do it again. See the picture of my car if it helps.
Geoff.
Don is correct by using masking tape to help set up from the rear front fender stripe through to the rear. The top of the stripe should be a straight line. The laser I used, forgot to mention, was just one of those pointer type laser levels on a tripod so I had to rotate to get each point. Worked though. Good luck
Geoff.