Okay, thanks for the input guys. I primarily have experience working on one piece cranks, so I guess I didn't realize how litte standardization there was amongst 3 piece cranks. I kinda thought spindle length was the main driver of chainline here. I have a crankset in mind, but it's off of an old 80's Raleigh MTB (a Sakae SX crankset), so I won't have any manufacturer's specs to go off of. I'll just have to go the old fasion route of trial and error through the LBS .