i have the roush UDPs. the instructions are 10X better than the steeda UDPs. i have installed both sets. they install very similarly, but with the roush, you trim off the unthreaded part of a stud, and steeda gives a new bolt to replace the stud. i like the trim part better, some like the replace option. other than the stud, they install the same. click the link in my sig for a good set of instructions.