It isn't particularly old, being the current(ish) long wheelbase frame. It has a handlebar brace that was needed for older handlebars. I think that has been fitted to increase the handlebar stiffness as the bars look like the current style. The suspension block, carrier block, brake calipers and gear shifters are the current style.
Change the brake levers to the current style for better performance. Turn the front carrier wheels around for slightly more clearance but fitting Ezywheels is a better option.