Thanks! Was hesitant for a bit, but later the motors got sandwitched in such a tight array of beams composing the double wishbone that it seems even this small loss in retention won't cause any trouble. Tried shaking and pulling in random directions and didn't bulge. Of course, pushing it by driving hard, four stronger Cada L motors for that, will give more truthful results, but I'm optimistic.
And I feel kinda rude about the previous, first post, jumping to a specific without firstly aknowledging how awesome this moc is. Just assembling it makes for an unworldly experience and I would advise everyone to try it. Even without buwizz or batteries. Hell, even without motors and wheels. Just marvelling at the intricate connections that give both rock solid sturdiness at optimized weight is worth the trip. Then I heard it's quite capable as a vehicle as well, haha. Can't wait to try. First time was improvised with two large and heavy Lego AA battery boxes that barely made it move.
Planning to amass a collection / timeline of official supercars that show their advancement through Lego history and this, though a buggy, will stay in it as an shiny reminder of what it really takes to bridge the gap from fragile car statue to actual RC vehicle when the size and weight start taking a toll on pin-joined pieces of flexible plastic and relatively weak motors. Marvellous.