Chrome bumper round the carb-side front engine mount - under an engine front-plate nut and a chassis bracket nut (arrowed). (Mount stud nuts removed here for other work):

Note that the screws through the bracket and engine front-plate this side of the car are countersunk and the nuts are stiff-nuts. The top one is completely covered by the rubber mount so you may need to lift the engine and remove the rubber mount to be able to hold the screw whilst removing/refitting the nut. The lower one is out past the rubber mount so may be accessible, which may be why the Bee's strap is under the lower nut. Because of the shape of the engine (there is more space between the block and the off-side engine mount) the mount bracket is the other way round so standard bolts heads are accessible. The Parts Catalogue shows stiff-nuts on all four.

Rubber bumper round a gearbox mount, using a mount to gearbox bolt and mount stud to crossmember nut. Note this shows it fitted to the left-hand side front, which is how I found it on Vee, the manuals show it on the right-hand side front:

However it only belatedly struck me that this strap only connects the engine and gearbox to the crossmember. The crossmember still has to make a good connection to the chassis rails, and with a super-sonic paint job on both that will have to be from the bolt spring washers cutting into the crossmember and the threads inside the chassis rails which go into captive but sliding threaded plates.