got a question about wide body kits

i was just wondering

if i wanted to custom my own wide body kit .. where would i be able to do that? do you guys know?

or how does it work?

thanks

you would have to find somewhere clean and preferably indoors, and have plenty of space to move arounf the car

how does everything works? like what would i have to do first and what would i have to get..or can i get it done professionally..or what's up?