Another Big Brake Kit Fitment Question

So this is my ask to you brake wheel fitment experts:

I have currently:

1. Alzor 020 in 18x9 et30..
2. 225/40/18
3. OEM Suspension


My want is to:
1. ECS 2pc stg5 rotor 353x32
2. 18z calipers

or

1. Forge 2pc rotor 330x32
2. 17z calipers


My concerns is depth spacing between caliper and my Alzor Spokes.. Not sure on clearance and spacing?

I would like to know the difference between the 18z and 17z calipers.. Are the 17z narrower than the 18z?

If I use the 18z with my Alzor 020 the wheel spokes are straight vertical.. What size spacers will i need?? Any info would be appreciated.

Thx

Post pics of the car with those wheels & on stock suspension, please

snobrdrdan said:

Post pics of the car with those wheels & on stock suspension, please

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