There are many excellent parts available now, but holy crap does the cost add up! I'm slowly gaining parts to build my MJ and plan to do a long arm 3 link front and a triangulated 4 link rear. If you don't make your arms adjustable you can save quite a bit of money. I like the Rubicon Express style of adjustable arms, but they only adjust by removing at least one end of the arm and are a bit costly.
Large RE Joint 3792 $30 through DC4wd.com
RE12050 threaded tube 1.5" OD x 1.25x12 thread 11.95 each.
RE12060 threaded billet stud 1.25x12 thread 37.95 each.
HW3080 1.25x12 jam nut 2.95 each
I found Ballistic Fab had some similar parts for a touch less money that allowed adjusting arm length without removing the arm, so I decided to make adjustable upper arms and non adjustable lowers to save a little coin, but it still adds up. I also like the adjustable nature of the Rubicon Express joints and solid races as opposed to the races in the Ballistic Fab joints. Both of these joints are significanly less money than the Evolution joints or a few others. The forged Currie Johnnie Joints are an economical alternative but I don't like that they can't be adjusted for tightness. So, I purchased the following parts:
18 Rubicon Express 3792 joints at $30 each! Total $540. 6 for the front three long arms, two for the track bar, 8 for the rear arms and two for the ends of my 1/4 elliptic spring packs.
3 HW3080 Rubicon Express 1.25x12 RH jam nuts $2.95 each
3 1.25x12 RH thread Tube Adapters $12.99 each
3 1.25x12 LH thread Tube Adapters $12.99 each
3 1.25x12 RH billet threaded studs with 1.5" coped end for welding $15.99 each
3 1.25x12 LH billet threaded studs with 1.5" coped end for welding $15.99 each
3 1.25x12 LH Jam Nuts $4.29 each
1 1x14 RH tube adapter $10.99
1 1x14 LH tube adapter $10.99
1 1x14 billet threaded stud with coped end for welding $14.99
1 1x14 billet threaded stud with coped end for welding $14.99
1 1x14 RH jam nut $2.59
1 1x14 LH jam nut $2.59
I'll need to get some 1.75 OD x 1.5 ID DOM tube for the upper control arms, some 1.5" ODx 1.25 ID tube for the track bar and some 2" x .25" wall DOM tube for the lower control arms.
As you can see, this stuff sure adds up quickly. I'll have three adjustable upper control arms, one adjustable track bar, and four non adjustable lower control arms with these parts. Oh, it'll take me months to get it built too!
Jeff