Auto trans rebuild

Hi
I'm fairly sure my torque converter has cacked it's self, so as I have to pull everything out I thought I would do a rebuild kit in both the auto and TC case

Plus Welch plugs in the back of the block

Can anyone advise of a reputable supplier

I've looked at rockauto and Morris 4x4

Rock auto is cheaper but I'm confused with the options.

Oh it's for a 1994 xj Cherokee

Aw4 and np242

It's done 427000 km hence the reason for doing the kits

Any help greatly appreciated, even just what brands to either avoid or are ok

Thanks

Ewen

Got the two drive shafts out, removed the front half of the exhaust system
Drained the TC case and removed the rear cross member
Floor jack under trans pan( yes with wood to protect the pan)

Looks like I might chicken out, I've got a lead one trans and converter with only 197000 km on it, will check it out in the morning