Cylinder head question....

This may be a dumb question, but I'm going to ask it anyway....Does it matter which cylinder head goes on which side of the motor? I took the cylinder heads off to have hardened valve seats put in, but after the estimate and possible problems that might happen to them, I decided not to go through with it. They were cleaned and checked for cracks.I did pay attention to which pushrod went where, but didn't pay attention to which head was on which side, or which rocker bar and rockers went on which side either.Am I going to have any major issues just reassembling the motor and not having payed any attention to these details?Thanks