Advance Adapters offers a conversion kit to mount a T5 manual transmission to your stock 2.9-Liter V-6.   This kit uses an adapter plate that goes between the T-5 transmission and your 2.9-Liter bellhousing.  It uses an internal release bearing (Ford# F1TZ7A-564A).  Bellhousing modifications are required.  This kit should only be used for a 2.9-Liter engine.

Part No. 27-1001 - T4 transmission to Ford 2.9-Liter with overall length of 26-3/4 inches

Part No. 27-1002 - T4 transmission to Ford 2.9-Liter with overall length of 28-1/2 inches

Part No. 20-0021 - 5th Gear upgrade (17% Overdrive)

Update:

I no longer see the (3) part numbers above listed on their website.  Here is what they say about the T5:

Advance Adapters no longer offers kits to adapt a manual to a Ranger transmission.

 

Contact Advance Adapters for more information 800-350-2223