999 lock up clutch wire

We're you able to hammer the runnel frame down

The one I saw he made a 1/8" thick U shaped piece that he bent. Lots of welding and cutting

I haven't picked up a welder yet but I plan to. I would rather have overdrive and a lock up clutch than anything else including a 4 speed. For my driving. A weaker 5 speed would be fine but I would guess that to be pretty involved

What did you do to clear the tunnel for the overdrive housing to set into?

I cut just the center out of the loop in the hump and left the two sides that are welded to the underside.
Then modified the trans crossmember.
My car uses a spool mount and I kept that, so it was pretty easy to make a new piece to hang the mount.
If you can picture cutting the entire center out of the crossmember and welding two flat plates to the end pieces that taper inward and the straight down with a hole through them for the spool mount bolt.
That and a dent in the hump between the bucket seats about 1/2 deep to clear the fitting from the governor port was pretty much all the mods I made to the hump.
Some companies make a biscuit type mount crossmember also, so making one isn't the only option.

No longer being a gold member I can't post pics in messages, but I'll see if I can find a few pics and upload them to my server and send you some links.