Need plug help !!

I thought that there is one year or part of a year with a short threaded plug as you mentioned.
I would confirm that the NGK plug is right for your car.

They will be fine.

ok the quick way you can tell is take one of your old plugs and put it sideby side with the new one.

if the plug is longer from the seat ( end of threads and the begining of the wrench flats) to the bottom of the threads then don't use them. if the seat to bottom of threads is the same go ahead.

what will happen is the plug will be lower in the combustion chamber and can cause driveablitiy issues..