Wolfe Race Craft Top notch company a little pricy but well worth it IMO... all I had to do was put it where I wanted and weld it. only fabing you have to do is to the plates that weld to the floorpan. and cutting for the rear bars(speaker grills) and cutting the carpet. I got mine Notched for an xtra 100 I would recomend this to everyone who is going to go with a weld in wolfe roll bar.this was my first roll bar install only problem I ran into was trying to get the headliner back in was a little tight.they dont take them out at there shop but I wanted more room for me wasnt to bad to get back in just tight around the seat belt unit.