If you lower your car, the pan gets it.
Steel pan can be removed and panel beaten out to original shape. you can't do that with Alloy.
If you get a transmission cooler then you will connect it in series with the existing setup.
The seller must be able to supply the correct AN fittings for Holden. If they cannot supply a plug and play solution then shop elsewhere. Those fittings are expensive. Also I don't think anyone should be chopping hard lines to attach a cooler.
