edsmax

I have a 1987 951. I am in the process of changing the belts and water pump. When I got down to taking of the timing covers, I found that my 1987 does not have a spring tensioner for the timing belt, it has the earlier style. I bought a water pump and timing kit from Zim. Besides the tensioner pulley, are all the other parts the same between an 86 and 87? Water pump, idlers, timing belt, balance shafts belt, etc?

Ed