The grill and cowl are painted oem trd pro parts from sparks. Not cheap, but quality Toyota parts. You can get aftermarket ones for cheaper, but there's a long wait.

The tailgate lock you can get on Amazon. I got this one, TOYOTA Genuine 2019 & Up Tundra... https://www.amazon.com/dp/B07XSD61XN?ref=ppx_pop_mob_ap_share but I think there are cheaper aftermarket versions of that too.