Parts list goes something like this... trans (very $$$ and hard to find) clutch, Pplate, hydrolic master and slave, cross member, drive shafts (or mod yours) more.
You will be better off finding a donor truck that has everything in it and scavenging from that so you get one stop shopping.
Once you get it together... fill it to the plug with D/C approved fluid. Then pull the shifter and add one more quart of fluid threw the hole. New Venture put the plug too low in the case and the output bearing runs dry and implodes (I know that the hard way). You may want to consider a cooler and filter kit and drop in a guage while you're at it. With the extra volume of the cooler/filter and the extra qt to get to the proper level I dont see over 150* towing (Yet, the Miata weighs nothing). Good luck... Chris