It's all based on my original design. It has been modified several times due to re-engineering of things. I would like to make a new tubular manifold one of these days, but it is cost prohibitive at the moment.
-Michael-

the thing i hear a lot of folks complain about later when doing a DIY is they wish they got locking bolts or those FM locking washers when mounting the manifold and turbo... mainly because they keep having to tighten everything over and over.