Back in old day my dad used to have 1970's Ford Squire station wagon. The rear trunk door opens two ways, by way of turning lever. If turn lever downward, it'll open rear door sideway, if twist lever upward, it open rear door downward like a pickup truck bed door.
I missed the most was 4 extra seat on very back of station wagon. normally you would see front, mid and rear bench seat which holds 15 people (5 normal people) plus far back of station wagon, you pull carpet off and it reveals double door that you can lift and volia, 4 more seats so basically Station wagon holds 19 people total. It was pretty much like mini schoolbus.
Squire Stationwagon had built in rear air shock that you can inflate or deflate it by air nipple bolted on chrome bumper
On 70's Chevrolet Station wagon. It did not have feature like Ford does, but its biggest feature is motorized rear door. if you turn key clockwise, you basically roll down the power window but if you continue, it'll roll down the door to bottom.
I missed the most of all was my 1967 Chevrolet C-10 pickup truck was 3 speeds column shifter, thus not worrying slamming stick shift on someone's groin who sits on bench seat with me. My truck can hold 5 peoples including driver.
About Horn ring on steering wheel, 1967 Mustang, 1965 Chevrolet Impala, and 1967 Chrystler car (I don't remember it but it was black ) have half circle metal ring that connects to both steering wheel support. You simply need thumb to press anywhere on half circle ring to beep the horn. The bad part is that if you hit horn on ring with hand, it'll breaks off. I can understand why they discontinued having this.
Parts Interchangeable on old cars such as you can swap Cheverolet V8 engine cylinder head such as 305 block with 305 head, you can swap 305 head for 350 head for more power without enlarging cylinder. MY friend sold me engine that he rebuilt for 1977 Camaro and I use it on 1967 Chevy, 3 speed tranny fits perfect and I noticed much more power than original 283 small block. 305 block with 350 head indeed made a huge difference. And any of electricial parts such as GM parts and it is interchangeable to AMC parts and sometime Ford parts can fit Cheverolet or AMC. I recalled getting parts at auto parts and it fits my 1969 Jeep and 1967 Cheverolet. Save lot of money and pain to look for OEM parts.
Catty