Hey Modges... thank you! Your welding skills are excellent!
The Bear's stuff is a little pricey and this is their Pro Mod bar. Most race shops just use a a length of 1 3/8, 1/8 wall-4130 tube and sell a kit to weld up the arms etc. With these heavy trucks you need a pretty stout bar to cancel body roll. I Started to make my own 4130 version and then came upon this gem. Had all of the bearings and ends... they ended up fitting this Bear's bar. So just had to buy the bar and arms.
Ok to answer your question yes they do have different lengths that will fit. Take a look see
Bear's
The second bar that I was looking at that looks really stout is this one from
David Lemmond's I've read a couple of good reviews from truck drag racers using it.
Your truck is looking awesome! Keep up the great work!