how hard are these to replace? also how about tranny mounts?

 

funny you ask.. that is my next project. For the 02 sensor go to autozone to test it before you buy one. The trans mount is very easy to do with a lift...

 

Transmission has 1 mount easy to do. Remove nut holding mount to crossmember then use floor jack to raise trans and remove 2 bolts holding mount to trans. O2 sensors easy with my MAC mid-length headers, never had to change them with my stock manifolds so not sure on that but would bet probably not hard also.

 

is there a tool you need if you want to remove 02 sensor? I have mac mid length too. How do you like yours?

 

They make a special tool, but it's not required. A wrench is fine.