240sx Subframe collars

[beater_s14]

I have a used set of collars in good condition, replaced them with subframe that had pre installed solid bushings.
$35 shipped obo
http://i314.photobucket.com/albums/ll421/qr25_nissan_ser/IMG00826-20110604-00511.jpg

[rangerjavi]

How solid are these, and they can fit a s13 correct?