Under dash MC pedal set

It's an uphill battle I'm not likely to win, but I see "DOT Approved" used a lot and it's incorrect.

FWIW the DOT doesn't approve anything. "DOT Approved" is marketing-speak and nothing more. "DOT Compliant" means that the mfg has done the testing to insure that their hoses won't land them in court should a brakes related accident happen and by claiming DOT compliance they're presumably maintaining the QA/QC paper trail to prove that their product hasn't strayed from the way that those tested were mfg'd as well as continuing to spot check production parts.

"TUV Approved" does means something. It means that the German Gov't has tested those hoses for compliance with the rules that govern flexible brake hoses and they passed. Ironically the TUV's brake hose stds are the same as the DOT's, so "TUV Approved" automatically means that they're DOT compliant.

All of that said, I make my own flex hoses from hose ends and braided SS/Teflon hose. I buy all of my parts and pieces from Orme Bros. (<- Link) Could probably buy it for less somewhere else, but those guys specialize in race car plumbing and when you cal them and say "I need a fitting to go in the *** of an QQQ that adapts to -3AN" they KNOW what that fitting is and very likely have it in stock.