Good:
A blower is like nitrous all the time.
If you want more power, spin the blower faster
It looks as cool as it is
Down fall:
They make alot of heat, you will need a good cooling system
You will need two carbs or a good injection system
You will have a big opening in your hood
The first car looks nice and looks to be turn key
The second does not have close up pics, it looks to be not all finished and clean, alot of stuff just taken off and a nice paint job with a stock gm blower on a 540
The third is a NOOOOO