no difference. engine bays are relativly the same, and so is the exhaust basically. only thing i'll get to have fun with is the heated rear o2 sensor, as it tends to be a interesting fit for it, as the o2 bung points up:
http://www.sr20forum.com/2058224-post37.html
danja, as much fun as i would like to just go turbo, i learned the hard way. b15 auto tranny dies at about 220whp. thats not worth 3k to blow up my one and only daily . it says in your sig you are sporting the megan header, mr expensive header .
this is the picture of the ssac header, from some random seller on ebay. idk if its a real ssac or not. check it out:
http://cgi.ebay.com/ebaymotors/91-99-NISSAN-SENTRA-200SX-SER-2-0L-INFINITI-G20-HEADER_W0QQcmdZViewItemQQcategoryZ33742QQihZ025QQitemZ380009678642QQrdZ1QQsspagenameZWDVW
all th way at the bottom of the page
http://www.ssautochrome.com/level.itml/icOid/1433