Joe, it does have some texture to it, i wouldnt call it wrinkle because its smooth , i hope that makes sense....
This!! Yes sir, heat gun just after last coat. My home made dual snorkel, no pictures of complete, but I did paint the base with gloss blackI use VHT wrinkle paint and heat it up with a heat gun.
Dave i think your on to something, the original one i have is pretty smooth to the touch but it does have an alligator look to itI think they were painted alligator skin texture

It's over 50 years old. It couldda been restored and wore back out. They've made resto decals for decades now.its still wears the original yellow decal, i dont believe its ever been painted
Yes, definitely heat, heat is what gives it its final cure and makes it wrinkle nicely if done correctlyThis!! Yes sir, heat gun just after last coat.
That looks GREAT!I used VHT High Heat Wrinkle Plus paint. Make sure to follow the instructions or it may fail to wrinkle(Ive seen it fail). 3 heavy coats applied in a crosshatch pattern(horizontal, vertical, diagonal) five minutes apart. I cured mine in an oven at 200 degrees for 20 minutes. Looks fantastic.
View attachment 1716455776
Repo's of the yellow air cleaner decals were available in the early eighties.. In the 70's when I repainted air cleaners I would peel the decal & reuse it...its still wears the original yellow decal, i dont believe its ever been painted
Thanks Rusty!That looks GREAT!