Yeah, interest rates are going to cost us more. Just ran a calc on a $60K loan over 72 months. At 3% vs 6%, you're going to pay about $6K more in interest if you take the entire 72 months to pay it off. That's a significant hit, and something I worried about when I ordered my truck in March.
OTOH, I am saving more than $13K off of MSRP (price locked) at Granger, so that is still much cheaper than paying full retail (+) for a new truck on the lot that does not have the configuration I want.
Mine is built and sitting in Mexico also. Status shows "shipped", but we all know that does not really mean it has shipped. It'll get here when it gets here.