I was going to buy some tsp long tubes for my truck but they are out of stock and don't know exactly when they will be in. I am in a time crunch (less than 2 weeks) to get my 6.0 running and the headers is the only thing holding me back. Wondering if 07 lpp long tubes would fit with 4x4 because I found a set on ebay. I would like to spend less than $500. what are my options?