May look odd to you but Engine/trans doesn't care about perfect alignment. Even many OE powertrains are off one or more ways worse when engine/trans mounts are bad.
But
Axles will care about position of them, Most so if either or both inner CV's are too far in or out.
Axles won't bother much about minor up/down, front/back or twisting errors of powertrain as long as axles don't hit things and tear boots etc doing that.
Axles may look ok w/ car at curb but suspension makes wheel to move in/out as you turn or hit RR tracks, Speed Bumps, etc. as wheels move up/down.
Inner CV big reason for design is to give some slack when, not if, that happens but most only are "safe" in a "sweet spot"
and that spot is small. Often only fractions of 1 inch. Maybe ~ ½ to ¾ of 1 inch total for many.
Is bad enough to get wrong axles for stock cars and axles break when driven a mile or three. I had a wrong axle in a box w/ right PN on the box years ago and didn't notice and inner CV torn itself apart just getting out of driveway because axle was short.
What if you got the opposite wrong axle?Too long and inner CV tries to compress over the limits and axle, suspension and trans will have much worse problems including a destroyed trans and/or knuckle failure. Hopefully you have problems just to install this and won't fit but can happen when car is jack up and error is only a little longer.
------------------
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)The Ogre's Fiero Cave[This message has been edited by theogre (edited 05-14-2019).]