Carrera Wide "A" Bleeder Valves

[ikeike2]

I converted my 80 SC brakes to the Carrera Wide A Steel Calipers. No big deal just a spacer making it wider than the SC. My problem is that I have many, many bleeder valves from different Porsches,1959-2001. If I remember correctly the hex on the front was larger than the rear. I looked in the parts section for new bleeder valves front and rear for 84-89 Calipers but I got confused. Can any tell me the correct sizes for the front and rear bleeder valves.....Thanks