When i had my 03, all i had done was intake and exhuast. It was a bone stock auto other than said improvements. Was it fun yes, was it worth it no. If it's your first hook than by all means, get your feet wet, but be warned, it's a slippery slope from there. You'll catch the fever and before you know it, your stock truck turns into frankenstien. Will you brake anything, well that's a crap shoot. The fact that you're showing concern tells me it's not worth it. My advice would be to go and WATCH the pulls, have fun, and talk to the guys and gals running similar trucks and talk to them about their upgrades. Talk to the guys and gals who DO break and find out what they DIDN'T do. Every event that i've been to pulls, and all the people i've talked to have been AWESOME! I've never seen a sport with so many people willing to help and give advice. I'm sure there are a handfull of people, including myself that have pulled and never broke on there stock configurations. I had 4 hooks on my stock 03 and never had a problem, 3 on the 04. 5 with no problems... but that's why i don't do it anymore:-laf