MSD Plug Wires

With almost 75k on my car I'm changing out the plugs. Figure I'll do the wires too.
Will MSD 8.5mm wires fit in the stock looms, or do I need to get another set for it to fit? If I need another set, how difficult is it to change them out?

Thanks!

Looms? On a LS1? If you're talking about the clips that hold the wires, there aren't any. Yes, the MSDs will fit.

Thanks...After posting, I remembered how short the wires were. I'm used to the LT1 nightmare.