circles are circles. With the exception of stock exhaust tips there are no circles on the tail of the Z32. The only curves there are part of horizontal elements.
I looked at the Strosek tails. They're 5 inch dia. (approx.) circles, out of scale and inconsistent with the major design elements of the Z32 tail. They are different, and would personalize your car, but IMHO only at the expense of the car's attractiveness.