i am looking at putting an 1989 n/a driveshaft into a 1987 n/a model with stock trans, and rear. will it fit or not? i have nonreplaciable u-joints and need a quick fix. i need your thoughts. i do not want to have more labor time than is needed! and a sale for the part is pending. please time is of the essencse. post any thoughts especially if you have experience with this.