Dodgy, a good transmission shop should know how to get what they need to fix up your transmission. I can give you the name and phone number for the shop in Loveland Colorado that just finished mine 4 months ago. He sourced the input bearing and gave me the old one that was worn out. If you saw this old bearing you'd see why it was so noisy. It's your truck 2wd or 4wd? Mine's 4wd so it's more of a bear to remove so I feel like it was worth the expense to trust the pro. I'm a good enough mechanic to know that this guy knew what he was doing and he did his best. He could've tried to talk me into rebuilding the whole transmission so he could charge me more money but he didn't. Anyways, don't let somebody BS you. If you're patient you will find any parts you need to rebuild your transmission or a different transmission from an auto salvage yard... my 2 cents.