My dad had an old yellow '75 Courier. bought it from his uncle as a beater, ran it
till the motor died, then installed a new motor, ran it until the transmission came apart going down the road ( literally, he kept driving and got it home tho ). then he later drove it to a local junkyard. this was mid 80's, had well over 300k on it. parts shifter broke so, for a few months, he stabbed a crow bar in the trans to shift it. yours is looking pretty nice. 1 thing about them tho, is I know that the frames tend to rust out. the Courier is also a Mazda truck, a B series but I don't know which. bodies are a little diffrent, interior is the same.