I have just started my build of the early Pantera (kit #RS-68). It's a simple build, but there are a few things to watch out for:
1. Those hood vents (cribbed right off a Mercedes C-111) didn't show up until later versions. It took a few rounds of filling and block sanding to get things level. The next coat of primer should have everything hidden.
2. The front and rear pans have the seams set up for the matt black on the later GTS versions. For an early car, there are seams very close to the turn signals, and they are not there on the real car. Be careful when sanding.
3. If Fujimi could call it a DeTomaso Pantera on the box, why couldn't they give us the lettering for the rear panel, or the emblems for the wheels?
4. The painting guide shows the scheme for an early GTS. Break out the Alclad for the bumpers.
This should not be taken as a flame on the kit, because the basic shapes are there. Unfortunately, Fujimi has tried to provide several versons of the car from one basic tool. Get plenty of reference pics, and be prepared for some modelling, and you should be set.