does anybody know where i can get a full exhaust headers all the way back for the celica. and i wondered if i get, lets say, i have the obx header a bolt up cat and a greddy cat back exhaust, will they all just bolt together? also to install the headers.. is there anything that makes it difficult? for example me and my buddy were trying to install headers on his grand am and to install them we had to loosen the motor mounts and tilt the engine forward so the headers would fit behind the motor.

there are some regular length headers you can go with (dc sports, aem) although some say porting your stock header will give better gains. there is also a company that just released a full length header might have been weapon r http://monkeywrenchracing.com/wr_header.html, i dont know what if any is required to modify your midpipe, im sure there is some cutting involved because last i was under the car i remember it being one piece from the header to the axleback section. you can go with the trd kazuma exhaust as well which is a header-back replacement of that entire section and then one small muffler or resonator. this removed the catalytic converter and resonator and is VERY loud. there are many many options for an axle-back (cat-back) system. for my girlfriends car we went with trd. it has a nice sound to it and produces good gains. greddy is very quiet. there are options, search around on www.newcelica.org you will learn a lot