The first one linked suffers from lack of parts availability, particularly the RH 1/4 panel & rear wheelarch it so badly needs. Car is fitted with a 6 point roll cage, so illegal for road use in some states here.
The cage gives up a hard life & the fact the engine bay is in the condition it is, means there would be little of the original car in that sale.
Poor paint & looks a possible rusty car going by the RH 1/4 panel.
Upside, tach dash (thats it)
My opinion, to make that car nice it needs at least $40K spent on it.
The last car linked was at least a known car & was fairly original.