the best way I can explain it is as it was explained to me here is the message to me.
The factory ones are made of polyurethane, but it is FOAM poly
and the foam breaks down. It gets soft and collapses.
The engine mount grade polyurethane we use will last MANY years.
Probably as long as you own the car. AND it is firmer so the front
k-frame stays put, giving better handling.
And it is priced lower for the set than the factory dealer stuff.
you will need to reuse the factory metal parts though.
Like the bolts and washers
This is my take on it. It should bring more of a sports car handling and feel by tightening up the parts in order to do this you do sacrifice some of that family car feel as do you with tightening up any parts ie springs control bushing, beefier sway bar etc. I am by no means an expert on this so I asked some who are and this is the basic summary of this. So it truly depends on what your are trying to get out of your car as for feel wise. I personally like that tight handling but that may not be your case. in the old days I had a Trans am and the high end steering and suspension package did exactly that it tightened everything up.
Last edited by CPU Xtreme; 05-16-2013 at 08:24 PM.