I suspect so. I used the FL tower out of an 86 or 7 sedan in my 88 760T with no ill effects. I recall that the radius arm on the donor car was aluminum vs. the cast iron on my car, and that I used the aluminum one thinking that keeping the 'unsprung' weight down was the better thing to do. I don't recall that well, but the only thing to look out for is the presence or absence of the fitting for the anti-lock brack sensor on the knuckle. The older car's knuckle may not be compatible with anti-lock brakes.
Steve