Eight-letter words - change zero to two letters to make a new word

resistor

register

registry

triggers

stronger

resting

resting is 7 characters

stronger is in play

fortress

stressor

stressed

and it’s palindrome

desserts

deserted

asserted

assorted

trespass

partisan

Partisan changes 3 letters.

Continuing:

pastures

upstares

squatter

quarters

dragster