I like how the s13's extend from the base of the side view mirror trim. Otherwise, yours may look better if the tip of the arch's edge were flush with the door frame it's attached to; instead of the angle it cuts in at if that makes sense. Kind of hard to explain without drawing a picture of what I mean. Also, maybe they need to extend a tad lower because I noticed the red door paint and mounting clip underneath at one angle, which wasn't that far off from a side-profile. I personally think they'd look better on a t-top Z where the trim doesn't extend into the rear quarter glass, but that's sort of minor. It sounds like you're modifying existing car rain guards to fit the Z? Perhaps that's a reason for the above constructive criticism.
