Well, that really sucks. I went back to your pix, and I think I can see the difference in pitch. Are the upper horn grille openings relatively in alignment? All that being said, I have noted differences from side to side on know original cars as well. You know, hand made...
I'd venture to say that their cost is maybe 300 a copy if that???? Please keep us posted on how this goes and thanks!
Keep in mind too that these front ends can emit a lot of optical illusions. Sometimes I'll look at my horn grill openings and one looks higher than the other or they look crooked in there. As a matter of fact this very photo seems to show that the left opening is higher than the right. But its not, they are both in untouched factory positions. So I think it is wise to step back and take a break from this area, It may begin to look better. Another test you might want to do is to mock up the lower grills in there to see what their orientation with one another is. Keep your head up; I think you might be splitting hairs...
By contrast an early 911 is flatter and has all sorts of breaks and gaps with its separate front fenders and integrated removable bumpers. Victor said oh yeah, 911's are breeze compared to a 356... Anyway just story to remind you that by design 356's are inheritedly problematic to get right, but you already knew that.
Keep chipping at it!
Comment