Looking for 90 T4R donor for replacement parts and amazed how many of these classic Toy pickups and 4runners you find in salvage yards. Suggest check and see if local salvage yards have a web site, there's a salvage company in calif. that has several yards thruout the state and a website where one can search for a particular vehicle a get a list of the year and location.
If the item is just cracked might try using a plastic epoxy on the backside of the crack and hold in position until the epoxy sets. Toyota probly still carrys plastic interior paint or purchase an aerosol spray, 'fusion' or simular for plasic and try and match to desired color? I have taken scuffed panels sanded with super fine paper and painted and came out looking good?