What would you wear for this interview?

I secured an interview for a parts manager at a tractor supply company here in town. I have experience controlling parts inventory, ordering, warranties, ect. from when we had the shop. I know how vital proper management parts can be for a business such as this, so I’m kind of excited and pretty hopeful. It’s just like the shop, only times 100,000. They’re huge and this is not their only location.
So, this is a shop position, somewhere between a mechanic and the business office, so what do I wear? Jeans? Sneakers or loafers?