You can get away with some steel flat bar 3 or 5mm thick just line the engine up in the bay supported by the lifting tackle with the gearbox bolted to the engine and the gearbox crossmember bolted to the car, then it's just a matter of lining up where you want the engine to sit, measure the distance between the engine mounts and crossmember points where the engine used to sit and cut a piece of flat bar then drill holes where you need to attatch the engine mount to and where you need to bolt the flat bar to the crossmember.
I have a bad temper when working on cars actually I just have a bad temper all the time

and I still manage to make the datto work, I even managed to successfully install the head gasket upside down causing coolant to flow out of the back of the head between the block and head

so don't wory about working on the car if I can do it a monkee with a hammer and a roll of duct tape could probably do a better job