Wow, those are bad experiences with shops. I don't believe in shops, or tuner shops. Its all DIY and buying online and eBay for me. I did my front Tein install in 2 hours, and the back in 2 hours. Pretty straight forward. BTW, the instructions are in JAPANESE! So you gotta rely on the pictures. Pretty easy. Sorry for the trouble the shops gave you guys. Glad everyones happy. Teins rock!