flip kit question?

[SkyBlue72']

I'm thinking of either purchasing a flip kit or just buying the stock axle brackets and transfering them to the other side of the axle and welding them on permanently.
My question is, which one is better to do, and why do the flip kit brackets have the pin hole at a different location than the stock axle brackets where it's in the center?
If there's no problem in using stock brackets at all, I'll go that route since its alittle cheaper. But please give me some advice.