My front driver side seat needs replacing, swap with passenger side?

[The Schwill]

Blaine, what diameter bolt did you use as a replacement?

 

[Blaine B.]

I do not know to tell you the truth! Smaller than 1/2" though. About the same size as the existing fastener?

I know the rear INNER bolt looks to be about 1/2" but I do think I recall the rear outer bolt being smaller.

 

[TiRod]

Try using some PB Blaster on that bolt, let it soak 24 hours, then tighten - yep - tighten it to break the rust bond free. Tighten, then loosen, trying to get a little more turn each time. Once it starts wiggling loose, it should come off. Sometimes a sharp rap with a hammer helps to crush the rust.

A good cleaning with a wire brush gets excess rust off before it starts moving - all that stuff won't fit in the threads, it's better gone.