They look like the replacement engine mounts I got a while ago for for the '65 mustang. If they are about 14 bucks each. The other thing is to check is TCP (Total control products) and one other fellow makes some nice fabricated adjustable mounts with a urethane bushing. I don't have the link for the other guy but I think the were a bit more adjustable and maybe less expensive.
Here is the link TCP version for 65'-70'.
TCP Mustang Mounts
They are a bit expensive and will not clear SVO Blocks screw in freeze plugs without some grinding.
Sandy