It took a while for me to get to it but-- here is a photo of the air cleaner I refinished for my 73 240Z (yes, I converted to 3 screw round top carbs) using Steve Nixon's reproduction gaskets mentioned above.
I am very satisfied with the gaskets---they are identical to the originals in profile. I found I needed to cut them with a razorblade to shorten the overall length by about 3/8", as in a test fit they were a little large. I used Dap Weldwood contact cement. (in the small 3 ounce glass bottle with an attached brush applicator in the cap---it was a perfect sized brush for applying the cement to the housing and to the gasket)
Your experience may vary, but I cut away all of the old gaskets and had the housings blasted to remove all of the old paint, then hand sanded with 400 grit silicon carbide paper.
Wipe down with wax and grease remover several times, let dry and rattle can spray with Dupli-Color DE1607 Chev. Orange Engine Enamel (It appears identical to the original color--a deep red/orange)
Let the paint dry for several days to harden or the contact cement will soften the paint and cause wrinkling.
Decals are to come from Banzai Motorworks---- www.zzxdatsun.com
I hope this helps anyone restoring their air cleaner. Steve's gaskets are not cheap, but they are perfect, and again he has reproduced a discontinued part that can not be found anywhere else.
Thank you Steve!
Jim D.
"Zup"