The OEM VLSD takes different stub axles than the OS Giken. When it was installed, if they just swapped them over, that is the problem. One needs to be changed.

Here's a pic of the stub axles. The one in the middle gets replaced with the one on the right.

I was trying to find that picture earlier. Glad you knew where it was.

It's in with the rest of my pictures.

Engine is out. They had to order a couple more parts to do the swap. They are not wasting any time.

Thinking about the front end lift Aero problem I have. Brainstorming on what to try.

The vents like Rusty has on his fenders maybe?

Has to create aero under the car. Box and seal
Off the front end.

https://youtu.be/lxGwr7yi0UY

Never felt like my front end got light

Stock, I never did either. That is a whole new ballgame now. It may just be I need to make a rear height adjustment so my car won't squat so much under power. I may need to redo the whole rear suspension with better pickup points.
MA can do it but it won't be cheap.

When you can count the tracspec vents in the hood, you might have a problem. LOL

Ahhh makes sense. Tuning

I have never had issues with lift even at 160 and stock setup. Well the stock undertray came unbuttoned that is. Anyway, the only thing was that I was lower on Teng lowering springs. I have seen CFD rendering and the Nismo aero stops working at about 90 to 100mph and you start getting lift from that point. Lowering the car 1" significantly decreases drag and lift but it will still be a factor without a front splitter and removing area of high pressure. The hood vents remove the highest area of high pressure, the next place is the fenders. There is a reason all racecars have a way to remove high pressure from the wheel wells.

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That is why I am leaning toward the suspension setup. it's free, may go with Phunks idea and raise the rear. I will have better traction and an even car at WOT.

Still kicking around ideas. I can lower the front some more. That may be the way to go. I am at 1/8in. rake right now. Maybe I go to a 1/4in. rake.