Should I Buy it to Burn it or Build it?

[banpei]

Depends on the price ofcourse and where the dents are.
(I assume it is in the US ofcourse)

Front and rear fenders are impossible to get by these days, so you need to find them secondhand or fix them with fibreglass (front) or steel (rear) copies. Other bodyparts are obtainable, but probably are more expensive than fixing up the old ones...