from the testing we did one the CS inserts, they were equally as sloppy as the 70 duro AWR mount. i would take the inserts over the AWR though. at least the insert can hold up to abuse, unlike the AWR mounts. but as far as locking in the driveline.... they dont do very much. filling in the holes in the stock mount, helps a little, but the stock rubber is just too damn soft. and the inserts did squat for wheel hop. but there are zero vibes from them.
but ive said before... the more vibes you get from your mount, the more it is actually helping. maybe its just my outlook on mods. my though is, if you ar gonna do it, do it right. if i am going to spen my hard earned $$ on a mod i want the best part available. i dont want a half assed mod, that is a little better than stock, but not as good as other products out there. maybe itds just me ??