$2000 for tips, some piping and resonators...I've already bought about $200 in parts will make the same thing while also adding an x-pipe, something the X_M doesn't have yet the F10 M5's do.
http://www.ebay.com/itm/FABSPEED-SUP...BWn8mC&vxp=mtr
__________________
'10 BMW X5///M - Alpine White on Sakhir Orange - JB4 w/ HCP Stage 2 BEF, NGK 97506 @ .20, SS tubing & BMC filters, gutted cats, AC Forged 312 22's, H&R 2"
'98 BMW 740iL - ///E39 M5 6spd swap, fully built engine (sleeved, P&P, cams), 3.46 LSD, H&R Stage 2/Bilstein HD, Magnaflow 14816's
'97 BMW 328ci - ///E36 M3 clutch & L/W flywheel, Z4///M 18's