Hi new to mustang. I hve a 1990 ford Mustang 5.0LX.I'am trying to take off the cats. to put in H pipe.All parts are new and had the cats. put in bye a shop for aircare testing.I had my H pipe on before but i live in Canada and we hve smog emissions tests ever year so i want to change it myslef to save money ever year.Now that the car has passed aircare testing i want to put back the H-pipe i had on early for another year.I am haveing trouble taking off the cats. pipe ,all the bolts and camps are off but the pipe just doesnt want to move.I hve the front of car up on ramps doing it myself in back yard.I noticed theres a bracket brace were the hangers are for the exhuast where 4 bolts are 2 are very hard to get at.But shouldn't it just slide out of the hangers racks with no problem?Help please thx.