I'm going to a TH400 on my car. For the moment everything in the driveline is stock- I cannot yet afford a 12 bolt or 9". So what do I need to get the TH400 to bolt up, and also can I modify my stock driveshaft to match my 10 bolt with a TH400? ( I know Ill need a new d/s in the near future, at least to match to a 12 bolt) Id just like to know my best options here, thanks guys.

 

You need a new DS for the TH400. I suspect someone could modify the stocker, but if you need a TH400, its hard to understand how a welded stock DS and a 10-bolt are going to survive.

If you want a used chrome-moly DS for the TH400, PM me.