the ddm kits are cheap chinese kits too but the build quality is decent. Ive had a few sets and never had a major issue.

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99 540i sport, acs type 2's chrome, acs spler pdls,Euroclrs
04 745i aw sport,21's aib's acspedals& rf splr(sold)
00 328i Prem Aw18" 335spt whls(sold)
02 Corvette 6sp,z51,2"drp,19"ccw'sshrt shft,corsa exh,dd nav
05 X5 3.0, pana rf,nav,xenon,cldweather, premium.ipod hookup, 20"4.6rims staggered 315rrs.
06 750I aw, sport. chrome21's,acs pdls,acs rfsplr,mtecs,8k hid fogs,Leds.oem ipod&sirius
03 VIPER, forgelinewheels,tune,exhaust,intake.