I had a lot of trouble getting my motor to stay still, it got so bad the engine would bang agains the firewall, it mashed my ramflo filter!.
I have since learned half of my problem was the rod change gearbox, the remote change acts as an engine mount, in the rod change the exhaust does instead, i used to snap heaps of exhaust brackets too, and lose the bolt securing the collector to the sideplate...
Make sure all your engine mounts and stabaliser rubbers are all good, if its a remote make sure the rearmost mount is in good order, i bought the fancy rubbers that arent rubber for my engine bay, but i have been told they are too hard (by warwick).
Dont bother with those bottom engine steadys, i bought one and it did bugger all!.
Make sure you have two top stabaliser bars, this was my trouble aswell... with esentially clubby running gear in a round front car i couldn't fit the second stabaliser due to the radiator being closer to the motor, if you have a simular problem you need to source, or make, a steady. Problem is the clubby steady comes out of the side of the head, this fouls on the radioator in a round front...
I procured an old custom stabaliser from the Dr which i further customised and fitted, where the stabaliser bracket on the bulkhead bolds down quickly cracked.... I was shown a trick, cut a nice thick bit of plate to fit under where the stabaliser mounts, in the cabin (easiest way is to trace the thin hydro pipe mounting plate or simular) Mark the holes for the bolts and drill out your plate. Then get some nice new bolts and weld/brake them in to the plate, insert your new gizmo via the cabin, so the threads come up into the engine bay, then reassemble the stabaliser mount.... This seems to have worked so for for me..
Another trick is to make sure you have a good split washer on the bolt that holds the collector to the sideplate, the Dr taught me that
. Although i had a fasner guy in at work the other day and he had these fancy new fastners, there like two little washers with cams on them that interlock when tightened and dont rattle loose, he actually showed up today with a sample so i will test them, i reckon there perfect though, they seriously wont come loose! my sample comes on a little plate with a stud and wingnut, and i cant undo the bloody thing!
Gareth