i dunno man, i take one look at those pen tips and im like dude... these are the pencil tips they had on the old civics... u kno?
my muffler's a little on the large side... had to dremel to body to make it fit, but well, im a riceboy...
i use the AC/DC adapter things.. u kno, the thing u use to plug ur CD player into a wall... just bash away at it and dremel it to get the plastic out..