I bought one off the Matco truck, buy far the best i have used it's comfortable with a big lens easy to see puddle.
http://www.matcotools.com/catalog/product/ADBW244VGD/AD-HELMET-5-13-SHADE-DAY-OF-THE-DEAD/
Just don't buy a wobbler there ****!! a stackable 1 is good but time consuming to set up,
I bought a dial 1 and it's awesome i can rip a 1/2" wide dado nice and clean on my 3hp table saw,
You can hang your doors,install your diff and run all your plumbing and wiring while on the rotisserie, but i wouldn't push it by installing the engine that i would do like the others have stated on the K from the bottom.