I bought a new 160 degree Thermostat for my GM 5.3L engine. It is still new, never installed or used. I Paid $59.95 (at the time) plus shipping. I will take $50 for it shipped. The Part # from Summit Racing is SLE-100223. I'm sure it fits many more vehicles than just this engine. Below is a link to the item on Summit's Website. 931-308-7746 Located in Cowan, TN.
http://www.summitracing.com/parts/sle-100223
http://www.summitracing.com/parts/sle-100223
