No ....those IMO do not give much cushion and you will hardly notice any difference from a regular heim. The ones for street I suggest are rubber bushed. I will dig them up later.
I looked at those last night as well... States right on the description NOT to use these for any steering and or suspension 3 or 4 Link set ups.
I'd be interested to see the ones you are talking about HemiDenny... I looked at Detroit Speed briefly last night but didn't see where you could purchase the ends separately.