everyone does flowmaster weldins...has anyone done some borla or magnaflow weldins? or any other type of muffler weldins that got them good results? I dont have the 600 dollars for the borla or bassani Catback i want, so im just gonna do some weldins for now. I have the paxton novi 1000 kis and it is wayyy choked up. will weld ins releive some of that backpressure or should i get an o/r x pipe? thanks for your help.