Been looking all over for a 46RH. Found a few, all but one were to expensive and trashed. Went and checked out the one today at the bone yard but it turned out to be the non lockup version. I did however score a 42RH.
Its not as stout but it should do the job for a few years.
bye bye 904TF, hellow 4 speed OD!
We are doing this build at my friends shop.
http://www.gcrods.com/index.html
USCarTool SFC's were fitted.