Need help on a rollbar

[fastmatt01]

My dad wants me to get one since I had a 8 month old that rides in the back but would like to get educated on this subject. I think a 4 pt would be best since I sometimes have riders but hell I'm not sure so help me out guys. Also does it cost a fortune to install?
Thanks,
Matt

[Eugenio_SS]

Wolfe 4-pt cost me 203$ in december with removable cross-bar.
Figure a day for the install... should be slightly longer if its welded version and if they are painting it.