problems w/ trading lt1 catback to ls1?

i got a borla catback on my car right now, and i might trade it for a loudmouth setup on an ls1. thing is the guys wants to trade only the rear section of both setups, can this be done or can i just even trade his setup w/ all the pipes off both cars? if i can does he need to fab hangers for his car to accept the borla and vice-versa?

what does he mean "rear section"?

you'd need to have the pipes from the axle back in order to get it to work i think.

the LM splits as the pipe comes down from over the axle, and the borla splits just a little after that.

i think the easiest would be to cut the pipes in the I-pipe someplace...it will be easier to hook back up, and easier to weld

just what i wanted to know. thanks