need a fuel sending unit

what is the best site to get a fuel sending unit from for a 92 b2600i? ive been searching but ive found what seems to be 5 or 6 different design of sending units......ive tried all the local auto parts store and they said they cant get a sending unit for it

rock auto has them i just looked it up 123$ CDN a lot better then the 600$ i paid 10 years ago at the dealer

ok thanks, when i was searching it was showing all kinds of different designs so i was wondering which one to get