Maybe they forget to add front McPherson strut support.
Not only 78_US body of all sizes and variants - 82_Gen (all sizes and variants) and 93_JP (all sizes and variants) are also unable to use front McPherson strut as I tested those bodies (I have reported in December 2021, where I proved that front McPherson strut is possible in all of those bodies).
the body was created at a time when there were no morph sliders, i’m german, so i used german names for my bodies up until now. 
it also highlights the corresponding morph, so for now i would classify this as a luxury issue to take care of when everything else is working fine. the new bodies will of course be given the english names 
I understand german too, so not an issue for me either, just a thing I noticed that you may or may not want to fix. 
I don’t understand a word of German, but… It’s not really a huge issue for me, either. Most of my use of the sliders has been to fine-tune an area, or to blindly move the slider and see what happens. Non-English names haven’t changed how I use those sliders.
08_US_Hardtop has a glitch when I slided A-Pillar morph backwards (it occured when Y-Axis of A-Pillar is less than 0.42), where all sizes of 08_US_Hardtop (2.70, 2.90 and 3.00 m wheelbases) are affected, but the soft-top variant (see below for comparison) doesn’t have a glitch.
This body with a MacPherson strut front and torsion beam rear
It has also too much minimum rear brake force at the lowest settings
Safety is also quite a bit lower than comparable tiny wb bodies of the era (this one from 4.1 had 36 safety instead of 28 with basic 90s iirc)
All of the 11_eu bodies have 2 different kinds of mpv body except for the 2.8m M version. Is this a feature or a bug?
Some have windows behind the rear doors and some don’t. I think the real question is why the 2.8m wheelbase set lacks a version without such windows.
Edited reply because I don’t feel like cluttering up the thread: Sorry, I’d assumed that you were wondering if the bodies were redundant.
That was the question.
Relay_85_SUV has an upper D-pillar glitch, where I shortened Rear_Length morph and inclined D_Pillar morph to the max.
Affected variants as I tested are: 3-door, hardtop, soft-top, and panel van of all (2.03, 2.38, 2.62, 2.85, 3.10 and 3.38 m) wheelbases, but interestingly, the 5-door and MPV variants are unaffected.
Additionally, I can see a chassis glitch (Relay_85_SUV has a rear-engine support) when I also shortened Rear_Length morph to the max, where the 2.38 and 2.62 m wheelbases are affected.
'88 2.7m jp XL cpp body resets morphs every time the car is opened.
93_JP2_Convertible_ST (soft-top convertible) has an unadjustable window transparency on all wheelbases.
I’m pretty sure it does not look like a convertible for me.
when we can get that body with a convertible roof
I think those bodies are due for a ground-up revamp anyways, given their odd seams and awkward front “shelves”.
Although the LCV 4.2.13 is out, the JD1974_60s_AB112 morphs aren’t translated as seen below, and there are B-Säule (B-Pillar), A-Säule_Neigung (A-Pillar_Angle), C-Säule_Neigung (C-Pillar_Angle) and Front_Höhe (Front_Height) morphs that can be reset due to the presence of non-English characters, specifically Umlauts.
BodyEditor_10sSupercar02_Small-Coupe_Update_1_0_Preview
Morph: Windscreen_Upper X axis is broken and causes asymmetry upon usage.
also affects the Convertible Variant
PNGs showing variation
Issue also appears to affect the 2.7 Metre Variation as well
