I feel your pain Chuchwagon I too spend months at a time away from my project, I spend alot of armchair time mechanicing. Or else I would have attempted a 4 Link on my own. In order to excellerate time constraints I opted for the RMS unit.
As Blue Missile stated "it's only metal", with time to spare (home daily) it can be done cheaper.
As the old addage goes ......Time is money........... If you have the time and means, self performance beats out throwing $$$$ at a product.