I was annoyed by their site today too.
I found the link by going to the ebay motors new hom page, and waiting for it to load up; center and top, under their banner in small print is the option to go back to the old format.
Searching with the new ebay motors is a huge PITA - you used to be able to do a backwards search from a bookmarked item (like say you're looking at a Muncie main case, you used to be able to click on the "manual transmissinos & parts" group, and it would bring you there... it doesn't work with the new page(s).
If everyone read this thread I'm sure collectively we will save lives because stress only shortens your life... and this new site is plenty stressful!!!
BTW - message left!
Thanks for the link!!