I almost always use www.industrialmetalsupply.com now. The shortest lengths you can buy is 12" but they are usually right smart cheaper. I am doing a Hoss' inspired conversion on mine presently. I dont have all the costs infront of me now but I will see if I can find them. I bought a few short pieces of stock from Speedy Metals that I probibly wouldnt use again, but aluminum of various sizes I can probibly use.