General maintenance and seals

[Happy_dan]

Hi all, I am sure this information is available by a search but I was hoping to get all I need in one order and can't find a complete list.

This winter I plan to pull the motor (327) on my 68 C-20 with a quadrajet on it.

I want want to replace all seals and generally check everything while it's out. I have leaks in different places and want to stop them all. I started a list and if anyone happens to have part numbers or something I should add to the list, I would greatly appreciate it. Also, where is best place to order it all from (Rock Auto seems pretty good for stock parts but shipping is an issue.

Thanks for taking the time.
Rear diff fluid and gasket - looks like Eaton HO52 or HO72 (not sure how to tell the difference
3 qts 85-90W gear oil

Change oil and filter - WIX 51143 cartridge - 5 qts 15-40W oil

Change transmission fluid and filter
Transmission pan gasket
GMTH400 Super max filter with steel or brass screen
6 Qts ATF

Oil pan and one piece gasket (Part number for gasket?)
Rear main seal (part number?)
Valve cover gaskets (part number Felcro?)
Timing chain gasket (part number?)
Front crank seal?? (part number)
Input shaft seal?
Tail shaft seal?

How to resolve leaks at speedo connection?

What did I miss for fluids?
I have no power brakes, already flushed lines and replaced fluid in manual brakes.
No power steering.