agreed that any short piece of fuel line plugged up works.
I used to purchase official plugs then realized even a vacuum plug from local
auto parts store, or a piece of that injector line plugged up works.
If you do not have some extra fuel line around, you will eventually when you
go to replace the lines.

__________________
80 300D 340K Owned 30 yrs
83 300SD 440K Owned 9 yrs - Daily Driver 150mi/day
02 Z71 Suburban 117,000
15 Toyota Prius 2600 miles
00 Harley Sportster 24k
09 Yamaha R6
03 Ninja 250