From experience, all I can say is this is a definate do it yourself job! No welding whatsoever! I did mine in less than 45 minutes farting around at that. My recommendation after removal of the stock which is EASY! Once the car is on jack stands (wd-40 before 1/2 hour) assemble the Brullen outside the car *** leave the protective wrapping over the tips intact!!! *** Slide the system under your car then just attach to the hangers one part at a time.
I also recommend buying new rubber hangers as the old one might be to weak for this powerful system , anyways it should take the novice ceg'r 45 minutes max!

Thanks
Eric
ps I installed it all by myself