Muffler? Such overkill...
We've run just the smaller center muffler / resonator and straight pipe from there to the rear on the Fiat Abarf 131... sounds good but makes it under the noise bar, farts a nice blip of flame from the pipe upon trailing throttle. Nice effect at night...
Scuderia Regurgito '75 Fiat 131, '93 e36
2010 Stafford: Winner, class ugly 2011 NJMP: Organizer's Choice and violently exploded gearbox
2011 Stafford: Most From the Least, 2012 NJMP: Shockingly issue free, 2012 Loudon: Rod thru block
2012 Hooptiefest: Multiple spun bearings, 2013 Monticello: Head gaskets, 2013 Loudon: More head gaskets, 2013 NJMP, 2013 Hooptiefest, 2014 NJMPx2 and Heroic Fix