Well my hardpipes took about 2 hrs partly b/c I had a hard time trying to find a t-bolt clamp to fit the oval shaped opening on the hotside. Downpipe was done on a lift so for me only about 30 min. but the majority of people out there when given the option of buying parts and getting them installed would pay a premium and probably continue to buy parts from said seller due to ease of purchase. If they can even come close to forum prices they would be placing themselves very competitively in the market, especially if they do good work. Word of mouth is paramount in this case. OK I'm finished with my marketing schpeel.