I used to own a 2120SC and added a pulpit. Parker will make you with roller, cleats, and all hardware to install It is mounted with eight bolts that go through the cleats and then there are two lag bolts that you will install through the cabin ceiling into the pulpit. You will need to order the pulpit through a Parker dealer, where it will be shipped for you to pick up. The bolts for the cleats are a real challenge and a two man to three man job since someone will also need to be on a ladder holding the pulpit while you line up bolts. Bear in mind the pulpit has some significant weight. The holes are not drilled for the cleats, but are marked so you can drill them prior on a stable surface. Take your time and use a drill guide to make sure the holes are straight. You will take your anchor locker hatch off and then need to have your socket with extension to hold the nuts will snugging all down in a careful sequence. Wet out the holes with sealant and make sure you put a bead around all holes prior to tightening all down. After you have the eight bolts in the cleats and all is tight you can measure and drill pilot holes to run the lag bolts through the ceiling. As with the other bolts, make sure you have sizeable washers on all and do not tighten to the point that gel coat starts to hairline crack. They send the new running lights that fit on each side of the pulpit as well so you will need to run wiring for them. Make sure you have time to do all the same day so all is well sealed.