[Ewr101]

72 Blazer, TH350- I'm needing to reseal the speedo gear and output shaft due to a couple leaks. Is there a "kit" that would have the seals, o-rings and/or gaskets and bushings I'll need to complete the job? Do I have to take the tail housing off or can I do this job laying underneath the truck? When I do start to disassemble things, is trans fluid going to pour out or is it just gonna be a little bit I can clean up with some rags? Any other tips? Thanks for your time!