Thats not installation, Thatās more the design of the bumper and the sensors āseeingā things at new angles. You are correct that research will be needed for the bumper you choose.
That tire is smaller in diameter and width, than the stock Wildtrak/SAS tires you have. 315/70
So that shouldnāt be a problem, your problem might occur when you switch to the 20ā wheel if not using the correct offset.
But I gotta ask the questionā¦why are you going to a smaller tire?
All of them will need a max tire clearance kit to run 37ās.
I Considered Eibach springs but not a lot of lift provided and Iām not weighed down to justify the rougher ride.
Body lift is a great option but I had too much trouble finding someone who could fabricate some bumper relocation...