Is there a way to get new foam for the bottom of the driver side seat? I've been looking all over and i'm not really sure where to look. any help would be great

 

You might be better off getting a whole new seat. Take a look at the local junk yards/pick and pulls. There are bound to be Blazers in there with the clunking thats going on. You can probably pick a new seat up fairly cheap.

 

is there a way to switch seat bottoms? from the driver side to the pass?

 

I'm pretty sure the seat is all one. But someone else should be able to clarify that for you...I'm really not 100% sure.