Woocommerce Shipping Class message on Checkout or Cart

Hi

I have some products that are custom made and have a lead time to be built before shipping. I am using the shipping class to split prices up but I want to be able to display a message on the checkout and cart that says that the item will take up to 2 weeks before dispatch.

I was thinking about having certain delivery options display for products with longer lead times that have a different delivery time but I am not sure how to do this and also it will get complicated if they have some items that can be shipped immediately.

I have found how to put the shipping class title and details on the product page but would really like it on the checkout so the customer is sure on dispatch times.

Is there any way to do this?

Thanks
Adam