Replacing flexplate?

I was planning on having the tranny gone thru and beefed up for the 360 so now seems to be a good time to let a shop do the trans and flexplate.
Has anyone used the kit from Mancini? It has all the clutches steels and cheetah shift kit and a deep pan that holds 2 more quarts of fluid, under $200.
What is a good price for a shop to do a tranny?
Thanks for all the input
Bruce