Kimber sight replacement

[Maximaking]

Hey guys, I'm looking to replace the stock sights on my Kimber Pro Tactical II soon. I don't really care to have nightsights on it and I've been looking at the Novak's. Here's what I've been looking at. http://www.brownells.com/aspx/NS/store/ProductDetail.aspx?p=9682&title=SEMI-AUTO+SIGHT My question is which set of sights do I need, 662-255-045 or 662-255-046? What model front sight should I use?

THanks
Todd