Up to you, but some things to think about depending on what you're doing. 14 bolt fronts run on the coast side of the gear. If you are going to shave it, you wind up with a 10" ring gear. You can get a 10" hp gear for an 05+ sd axle and it will run on the drive side of the gear. On one hand you limit deflection with a third pinion bearing adding strength, and lose strength running on the cost side of the gear. On the other hand you have gain strength running on the stronger drive side of the gear, but lose strength by not having the pinion support bearing. Both axles are going to require a bunch of fab, either cutting and retubing or spending hours with every tool in the shop trying to cut the cast brackets off of the housing. 14 bolt inners aren't that much more expensive than 60 inners so don't let that be a deciding factor and don't try to build an axle to fit a specific shaft length because they have to be custom anyways. The 60 casting is smaller and narrower, but even with the brackets cut off you have a very short tube on the drivers side for suspension mounts. The 14 bolt casting is big, wide, and has healthy pinion offset, but if you are retubing a 14 bolt with custom shafts you can put it anywhere you like. Finally, hp vs lp, you have driveline angle to consider, clearance with up travel and potentially dragging your driveshaft across rocks. So, I can't give you a straight answer to which one will better fit your project. Both axles are beef, you can't make a wrong decision between the two. But when you consider all the other factors, you may find one that will suit your needs better than the other.
