Ok so I have found out that I have a 68x118 bottom bracket with square taper. My crank arms are 175mm. If I found a new style crankset with all the correct measurements above will it work. I ask this because I have a bottom bracket now that has a stud running through the spindle with a nut on the end holding the crankarms on the bike. Will getting different tooth? patterns for the chainrings matter? I have only found one 48x38x28. There are many other different ones with different tooth patterns though. I am assuming that it will as long as I adjust my front derailleur's limits right********** Also some of them say for 10 speed, 9 speed, 8 speed. I have a 6 speed rear total 18 speed. God this is so confusing.