Originally Posted by FBinNY

As long as they're both triples you'll be fine.

As noted above, you'll probably need to raise the FD a bit.

But before you remove the old crank set, use a ruler and measure the distance from the outer ring to the down tube (or seat tube). When you install the new set, it'll have spacers which allow you to adjust the chainline. Use the combination of spacers which gets it closet to the original, to ensure that you're in the FDs travel range.