Thanks for all the good comments!!!
I took a few more pictures of the rock sliders. I didn't use the tacoma ones because the gussets were all ready welded to the sliders and I wasnt sure if they would line up right. Thats why I went with the 78" Xtra cab set for $145. I lined them up to the cab on jack stands and figured out the lenght to the frame the legs needed to be. I had to shorten them. It came with 8 legs, but I used 6. They seem strong enough with 6. I dont plan on setting the trucks weight on them. Then I used 2 straight pieces and 4 angle iron pieces as gussets. The flat steel i used at the front mount because angle couldnt go under the frame evenly. I was planning on bolting it, but there were a few tight spots where you cant get on the inside to put the nuts on the bolts. It was good I hadn't drilled any holes when i determined this. So I welded them to the frame. I placed it to the proper height, about a fingers gap between the cab pinch weld and the slider. I put a spot weld on one end then set the height for the other side and tacked. checked all distances then welded a bead. The center leg i put the angle gusset on after the side gussets were welded to the frame. I welded down the sides of the mounting plates, and on the underside of the angle. I did it that way so that if it ever needed to be remove all the weld could be grinded off. Also it could be possible to cut the legs and slide a larger diameter leg over and drill two holes for bolts to have a pins style removal. That would be later if they ever get damaged. They are holding up just fine and have supported weight of a bunch of different guys riding around in the truck. Hope it all makes sense. I had a friend lend a hand who had installed rock sliders on his 93 toyota he installed the 58" on his standard cab a week before I got mine. The extra set of hands is handy when lining everything up.