**UPDATE**
Ok so after cutting off my CAT to install my header... and putting custom piping from the header to replace the CAT....we got it all welded together... and WAALAA it was done......(so we thought)
So after the hours of work put into this... cutting.. welding... bleeding.... cussing.... drinking beers.... and smoking like a fiend.... We were finally done.... and i was on my way home....
On my way home i hear this raspy ass rattly exhaust leak sound... FML.... so i think at first that maybe there are some pin holes in the welds leaking... NO... turns out that when we were moving and messing with the exhaust pipe around so much... we actually caused the gasket at the muffler flange to start crumbling out... and it was leaking good....
So Monday night i went to replace the muffler flange gasket... but one of the spring bolts was bent into an "L" shape... and had been since i bought the car... i just hadnt replaced it yet cuz it wasnt leaking bad at all... so i go to take out the bent spring bolt... "SNAP"... broke off into the flange as suspected.... oh well.... so i pull off the whole muffler.... and attempt to extract the broken bolt... UNSUCCESSFUL... then damn bolt is SEIZED into the threads in the flange... and rusted to shit.... and not one drill bit i had would do a damn thing... FML.
SO i drop my car off the next morning at meineke to have them take out the broken bolt and put the muffler back on while i was at work... only to get a call around 9:30am... "Sir we cant touch your car without a CAT"..... me: "MOTHERFUCK"
SO i take the day off on Wednesday....to get all my shit done... errands ect ect.... took my car in the mo0rning to a trusted muffler shop i know about 45 minutes away... and had them fabricate me a whole new exhaust.... they cut the flange off the header... cut both flanges off my CAT that i brought in with me...welded a FLEX pipe between the header and CAT.... and re-installed my muffler after cutting off the flanges and welding a new pipe between the muffler and stock piping...
SO now basically i have a custom one piece exhaust... with the CAT still installed.... and a 4-1 header....nice and quiet. with NOOOO rattles. Here are a couple pics of when we were wending the straight pipe in with NO CAT. No pics from at the muffler shop.
and a random
p.s. sorry for the long story... i had to let you all know how much work this was to finally get the result i was looking for~