what's the best way to change out an e46 m3 exhaust? should i take off the rear diffuser, i've looked under and my main concern with bolts are the two drivers side and the 1 passenger side that are on the side of the muffler. The 4 bolts connected to my mids i'm not worried about those should be easy. Anybody know what i should use to get / unbolt them and what size?
i just noticed i accidently didn't post this in the e46 m3 section, can a mod please move it

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2002 Topaz Blue Metallic Sequential Manual Gearbox M3 Coupe
v715 19's matte black with ss polished lip 245/30/19 27/30/19 | CF front splitters|Gruppe M Ti exhaust|Black out package|Phillips Ultinon 6k|6k Angel eyes|OEM LED tails|Pioneer Avic N2 and more
2003 White on Beige Hummer H2
33" toyo open country and dubs otherwise stock.