To space or not to space? That is the question?

I bought a Rabid bb with alloy insert from eBay to replace SRAM one.

I have a 73bb shell.
I thought I didn’t need spacers as I have biggest shell size.
eBay shop said I need all three spacers.

Do I use the spacers and does effect chain line on 1x if two on drive side, one on other?
It didn’t come with any instructions.

I assume it’s a Chinese bb brand?

Thanks in advance if anyone could help.

Never heard of the brand but assuming it’s a threaded bb and a vaguely normal design then you’ll need 1 spacer on the drive side.

You could possibly run that spacer on the non drive if you want to modify your chainline.