I like both. Growing up,family members had both.
I chased a 67 Newport Custom 4dr with factory buckets,floor shift console.Did not get it after the family settled the estate after the owners death.
I have owned 68's for many years.
My main attraction to the 68's is the sidemarkers.
The dash,although similar to the 67,is busier with more padding.That does not bother me at all.
I love the tail section of any of the 68 Chrysler's.
But the 67's have easier access where the trunk lid opening is lower.
All 67's roofline/back window has a formal,rigid look to it.
The roofline/back windows of the "new of 1968" of the 4dr hardtop Newport is more attractive.Kinda a 4 door fast top. Despite being offered in the Plymouth and Dodge lines 67-68,it would be a one year only design on the Newport,Newport Custom,and 300 4dr hardtops.
Regardless,I just love the slab side of both years.