Last time I do floring for my wira A/B cost me RM200 (KF Audio)....U thing laaa...went you do enlosure at spare tyre...what the first thing in your mind...OK.. in my mind right know is how/where can i put my bagasi...I need my boot space 100% usefull & others ppl can see my sub....so need add flexi glass (3/4' thick) to cover my sub...flexi glass maybe cost around Rm250-400. Sub enclosure in spare tyre need pro to design it...to save money & time loorr... cost maybe around >RM500....My advise go to KF Audio, KK Lau, ACP, SoundQuest, CV & ask them how much the cost...