Place a Renault Clio engine of the 1999 or previous model. The supports as you are calling them (which are actually engine legs in the jargon of those who know the most) are not the same in terms of hardness but they are very similar and commonly few or almost no modification you can adapt it easily.
Although it is to modify, I would have to recommend that you place an AP type engine that are manufactured in Audi, Seat, Volkswagen, Skoda and others.
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