Sorry man, but im probably not gonna include the frame which makes it blend more, its kinda impossible to make such thing.
I think you would implement the h frame by just making an extremely solid roll cage in that shape, it would effectively serve the same purpose if it was just really strong compared to the rest of the car.
I guess i got it how it works, i will try to make something like that and see if it works. Well i actually wanted Banger Racing inspiration from lower classes where people dont crash into every car they see. So more racing and ramming, however less hard crashes into standing cars done on purpose. - - - Updated - - - Tested the H-frame, however i have bad results. It actually did made front and rear blend more, but just a little more and only when doing crashes in very high speed. Also it made front and rear deform weirdly.
The h frame isn't there to make the rest of the car bend more it's there to protect the driver. And every banger has it or some variation... otherwise its just a car lol
In a way the H Frame makes the middle of the car stronger as well and the drivers side door plate because it bolts to the cage its there so if the car rolled the roof dosnt come down on the drivers head and the harness bolts to the bottom of the cage as well
Oooh ok then, then i will include it because in high speed crashes the middle part of car deforms much less.