Do you happen to have any pictures by chance, lol i still dont know where or what a driveshaft is, im new to those parts, but my exhaust was a nice fit a little close, i untightened and retightened moved the pipes closer if i can as many centimeters i could, im going to take a look at the other parts if i could get a general direction where it is at.
I'd recommend jacking the car back up and making sure there's clearance around everything. I'd look at the driveshaft rubber connector(at the back of the driveshaft) and about half way back there's a tunnel brace that the exhaust on mine come extremely close to.
I installed it myself also, Do you mind helping possibly locate all points of like squeek chirp noise type thing like when i get in and out of the car, also when i start the car and start moving at below 1k RPM like getting out of a parking spot , i hear this noise in the center ish area of car , type of noise like a raccoon diggin in trashcans through a bag or something is the best type of noise i can refer too haha. but its quiet but sounds like that and goes away after i get moving but sometimes when i start stopping it comes back.