nice one Kwaker , let us know how you like the new blade Zep.
Make sure you don't take off too much of the liner lock, Zepla.
While i'm not Nikko i'm still going to give you the answer.There is a good chance the 154CM blade will fit in your Wave without grinding, provided the old knifeblade has been used enough to wear the top of the liner slightly.However, if your Wave is still in like new condition, so with a knifeblade that has hardly been used, the tang of the new 154 CM blade will be a fraction to long to fit right in.In this case what you need to do, after removing the old blade, is to file down the top of the liner ever so slightly, for instance with a medium stick from a Spyderco Sharpmaker.File a few strokes, then try to fit the new blade, if necessary file a bit more, but don't overdo it.The endresult should be a liner which seats completely under the tang, but not further, leaving enough room for wear in the future.
Finally here it is I got those weird bits in from eleatherman (thanks for that!) to take my wave apart and placed the 154cm blade from Kwakster in.To make a long story short, I am happy, very happy!Thanks Kwakster and eleatherman to make this happen (Image removed from quote.)
Looks nice Zepla,now don't cut your finger off.