I’ll contact you again. And it was originally intended to install the DOHC from a Scorpio into the Sierra OHC, but now I happen to have found a 2.9 12V (107Kw) and I prefer it now. The other thread hopefully helps other help seekers. Unfortunately, I found hardly anything to convert to this engine, since most of them should be converted to the 24V. The Umabu to the 12V should be a little less elaborate than the 24V. With friendly support of OHCTU NER I am now at the following change list: V6 MT75 transmission (I have) V6 wire harness from Sierra (I have) V6 control unit V6 (I have) V6 air filter box (I have) V6 ignition coil V6 Tacho DOHC cooler (I have) DOHC cardan shaft DOHC exhaust OHC/DOHC Map sensor (I have) OHC Diff can stay (I have) Now the parts with which I am not sure: -If I switch to disk behind (without ABS) can I keep the brake power amplifier from OHC? -Can I change the hardy disk from OHC? nd? -Lighter and starter can be used further? -Gas train and clutch train? -Motor bearings and spring legs front? Thank you in advance! And if anyone has the missing parts left, report quietly