My advice , go for the rebuild of the Koni's , the best shocks there are. over the years the rubbers from the inside gives the problem.
I would only rebuild those Koni's if they have adjustable spring perches for the coils, or are modified during the rebuild to be adjustable coil-overs. Otherwise, buy new shocks! Removing the spring spacers will not drop the car enough to make it look right as long as you have those fixed perch shocks.