Donk in 0.24 Rear fascia and PBR/pink interior in 0.25 New engines in 0.28 Don’t recall anything between 0.25 and 0.28
If you take the engines from the Barstow you should probably modify them quite a bit as they are Gavril which is supposed to be a different manufacturer than Bruckell I believe
the devs did that for me, now the game officially uses the same models as the barstow, that kind of relieves me of having to make a new engine front scratch, instead I will make the peripheries such as fuel injection and turbos.