Shopping Cart with these features

Is there a shopping cart solution for WP that includes both Dimensional Weight Live Rates for FedEx and USPS, and a Quickbooks integration plug-in? I have a client that wants me to redesign their site for responsive design (mobile devices), but they need Dimensional Weight shipping as their main product is large for its weight, and they need Quickbooks integration. I’ve been looking at EasyCart, but can’t tell from the documentation whether the live rates would include the dimweight calculation.