wah...
change new rear bumper lor
E9 style...
actually some ppl said hotbits same like R3 or R3 take from hotbits..
powerzone for sure better as it got R&D but pricy too..
if u want 100% satisfied u, then better go for powerzone...
if budget wise, maybe u can try the shop jssim recommend u
jen huang and killerz622 also using their exhaust
as for my car, the quote me around 800+++
from front to rear...
thermal-wrap might be good but sometime bad as if u wrap it and the exhaust getting more and more hot... scare it my crack it.. but for our stock condition car, i think thermal-wrap wont be a problem