Goin with a 700r4

[TugOwar]

Well, the 68 GMc has been out of commision with a blown th350 for over half a year now, waiting for me to get a better job.

Got the job, now just have to do the work.

Anyway, it came to my attention that the th350 that was in the truck when I got it is a short tailshaft, which means someone modified the driveshaft at some point and I have a sneaking suspicion thats the cause of the vibration I never could nail down.

So in weighing my options and deciding I wanted a new one piece driveshaft I've decided to just have one made now instead of one now and another down the road sometime. I'm going to go ahead and attempt the 700r4 conversion.

Picked up a used one this afternoon for $75. Even if its no good at least I now have a core to work with.

I'm looking for any information you guys who have done this have to offer.
This is a 3/4 ton GMC, it has the big heavy crossmember that bolts at the top and bottom of frame. Any suggestions about how to set up the trans mount? Can I even use this crossmember or do I have to use something else?

The trans I got today doesn't have a torque converter with it. I'm assuming any converter I get HAS to be from a 700r4?

The lock up mechanism, I know nothing about this. Its just a 12 volt current right? It can just be toggled on and off right?

I know I have to get a bracket for the tv cable at the carb end.

Anything else you guys can think of that would be of help.

I appreciate any input as I feel like I may be getting in over my head with this but I'm committed now.

In case you're wondering, I searched the FAQ as well as this forum and found no information about making this swap. Maybe I'm not searching right or something.