AFB would be the most ideal replacement for Klemmer, doesn't have as big a workrate but is more explosive and will get through plenty of metres per run. He's also about 2 years younger than Klemmer, has 60 odd games experience and is more of an attacking threat.
In saying all that is it worth us loading up on another prop? We could just back what we have and hold all the funds so we can make a big play for a key player either in the spine or at centre when they become available, not like us getting a prop now would make that big a difference to the side. We currently have Tolman, Sue, Fualalo, Ogden, To'omaga and Tualau as props atm...potentially RFM could also be converted to prop with our congestion in the backrow. There's enough upside in that lot to maybe take the risk and back them.