it is a problem when its a 90min round trip to the wreckers yard, will buy new next time as wreckers charge 1/2 price of a new one and give you a 20yr old part.
So you expect a wrecker to cater for you, just in case......Be realistic mate.
I've bought new parts, where I have had to travel to collect them, only to find out they are stuffed.
Poor baby travelling 90 minutes to collect parts.....I had to do a 500K round trip, to buy for my VC, headlights, indicators, headlight wiper motors with arms and a stuffed brake booster.....
If anything, doing that trip was a good excuse to get away, morre than the disappointment of getting a rooted brake booster.
At the end of the day, a wrecker is there to supply parts, with a refund or exchange warranty at a cheaper price than new.....If you don't want 2nd hand, stump up the dollars for new and hope to hell that it works