Reply to "can I use this alternator?"

I assume that the new alternator is also a pivot mount like your old one, as there is also a side mount alt. The pivot mount comes in two sizes, 7" an 8.25". This is the center to center distance of the two (top and bottom) mounting holes. Your old alt is 7". I haven't tried the 8.25" in the Pantera, so I don't know if it will clear.

The hole for the adjusting arm is not threaded. You can either use a longer bolt with a nut and washers, or install a heli-coil in the hole. The adjusting arm will hit the top of the alt, significantly limiting adjustment. You can either heat and reshape the adjusting arm, or remove some material from the bottom of the arm. The back of the alt will contact the dipstick tube when rotating the alt clockwise, as would be required when removing a belt.

Since the alt case is held together with three bolts, the regulator (back case half) can be installed (clocked) in three different positions, 8, 12, and 4 o'clock. You want the 4 o'clock position. 12 o'clock would be straight up into the heater hoses. In the pic above, the alt pivot bolt is at the lower left, barely visible in the pic.

The next area of concern would be the alternator's output. See if you can have it checked. If it's a 75 amp, you're OK. If it's a 95 amp, and you haven't added additional loads to the car, and you don't use it to charge a dead or drained battery, you should be OK. If it's a 130 amp (or higher), you really should increase the wire size from the alt to the ammeter, and from the ammeter back to either the starter solenoid (early cars), or the battery...however yours is wired. If you have a voltmeter installed instead of an ammeter, then a large wire directly to the battery terminal of the starter solenoid works.

John