Agree with A12 Mike.
Yes, the PVC-ish plastic end works in my '90s cars & trucks, and it's really the only way to neatly get gas into my '68 & '69 Road Runners.

For adding Sta-Bil to a car when I don't pre-mix it, I use a funnel with a small-diameter end like what you'd use to fill an AT through its dipstick tube.