Thank you everyone for your advice and tips.

I am aware that it raises the seat up an inch or two - my GL might have
Westy seats in it now so that might not be a big deal - I'm only installing
the swivel on the passenger side anyway.

I considered the old switheroo method of removing the seat and installing it
backwards - I'm sure it works but it sounds a bit cumbersome and having
never owned a Westy, a swivel seat has always been a desired upgrade for me.

The part was dropped off at my work last night so I just saw it this
morning. It's in good shape but I am hoping when it was cut out it wasn't
cut too narrow. We'll see when I actually get it near the bus and can size
it up a bit.

Again thank you all - I'll return with more questions should I need to.

--
Thanks,

Jeff
'85 GL (Gertie)
'90 Carat (Grover - the noble parts donor)
'86 (We call this one Scrap)
'78 Bus (Melissa) Patty's Bus