ya, it is right inbetween both of them. it is about 62-63 mm for some reason. I don't think the greddy will bolt up anyway. it does have that cheezy neck down though. actually it is a plate that is just as big as the i/d of the stock muffler, so it would not blow out gaskets and that kind of crap.
------------------
98 se-r w/ p/r cai, stillen header, courtesy exhaust, JUN flywheel, ACT clutch, NOS nitrous kit, eibach springs, kyb struts, st sways, cusco camber plates, f/r strut braces, lotsa bushings, and a bunch of other crap not really worth mentioning