i have a 82 grand prix that i think is the first year of its body style. everyone also says its a monte carlo
i love the body style of mine, not so much the earlier ones but wouldnt stop me from drivng one and fixing it up.
i still like the one you have besides the tail lights and color. i say keep it repaint it and clean up the body by taking off the useless chrome strips. put a nice set of wheels on it and also find some new tail lights. i would use it for a daily driver.
heres a picture of mine, im keeping it forever!