Some engine, brake and suspension DIY components.

[jamiemirror]

Kris, I use grade 20 steel and in my design I presume (I personally will go that way) to hook the turbo on the stand bolted on left front strut tower. This will decrease mechanical stress to the extractor and will allow some movement of the extractor tubes (caused by heating).
I don't think that there is a way to shatter any piece from the tubes :-)
If I compare grade 20 steel to regular stainless steel - I can say that grade 20 mild steel is somewhere ~grade 5.8-6 and stainless one is max grade 7. This can be important if I use big turbo unit without any kind of support (for headers or turbo). I can resolve this issue using 4+mm thick tubes but I prefer to rely on design.