What desiel engine/tranny should I get in my 69 Ford Mustang?

I want to put a desiel engine in my Mustang and I'm pretty sure I can fit a bluetec in it but I'm not sure what transmission I should use to match it. I definitely want a 5 speed manual at the least. And once I have installed the engine and transmission is there any other adjustments I need to make to maximize performance or just keep it from falling apart. And if you can please include the price I would be looking at along with where I could buy the part.

You'll need a whole new fuel system, & probably extra suspension up front, becauses diesels are heavy. Maybe a higher rear gear, as a diesel puts-out its max power at like 2500 rpm, compared to a gas engine at 6500 rpm.

You can get 2.25 rear gears for a 9" rear, so gearing isn't an issue. You will have a far easier job using a pre 1995 engine, without electronics. I would suggest a Mazda diesel, since it is a Ford. There are companies which import Japanese engines and transmissions, you should get them together.