replacing subframe bushings advice needed

[euroZ06]

I have a 73 charger, all in all in good shape, but from the looks of it subframe bushings are shot. I ordered a set from energy suspension, and they look a bit different than the ones i see under the car (havent really looked up close, just glanced under the car). 4 mounts came in, all look the same.mit seems that the ones toward the front (near front tire) seems a bit larger than the ones near the transmission. Will these mounts work?

Also, the ones by transmission have a nut on top, so im not too worried about them, however the ones near front tires dont, it looks like they go straight into the body/crossmember, is this correct?

Also, for the instal, i just put the car on jack stands, then use the jack to prop the frame crossmember?

[polywideblock]

did you get the k frame insulators instead   

       like these aluminium ones   from firm feel