[68bird400HO]

According to the assembly manual, the front sway bushing bracket bolts screw into a riv-nut that is pressed into the holes in the subframe. The riv-nut part number is 3829695, however, no longer available. Are these riv-nuts available somewhere else?? If not, what are others using to attach these brackets to the subframe??

[BobC]

My paint and body guy had a couple he used on my car. I'll ask where he got them. You might go online and check McMaster Carr. They have a lot of fasteners.

[toomanybirds]

Most hardware stores will have them.

Be sure to get steel, not aluminum ones.

A special tool is used to compress them, but you can do it with a bolt, nut and washer if you are patient and careful.

[SS-TA]

I believe that the Riv-nut like other threaded inserts requires an installation tool, which expands the nut in the hole for an interference fit. If your riv-nut is loose you can tac-weld the flange to the frame to keep it from rotating. If you need to replace the riv-nut you can tac-weld rather than trying to borrow or buy the expansion tool.

[LeighP]

You can manually fit a riv-nut (which are available from most fastner supply houses). You need a quality high tensile bolt, a quality nut to suit and a washer.
Drill the hole for the riv-nut (if needed) then tap the riv-nut into the hole. Apply a little grease to the upper face of the washer and place that over the riv nut. Run the nut onto the bolt, then screw the bolt into the riv-nut so the bolt fully engages the thread in the riv-nut and the nut on the bolt is bottomed onto the greased face of the washer.
Holding the bolt head in place so it doesn't turn, tighten the nut downwards. The greased face of the washer allows the nut to turn easily which will compress the riv-nut.
Undo the nut a little while still holding the bolt, then remove the bolt.

Its slower than an application tool, but saves buying a tool for a one off job.
An off-roader guy put me onto this method.