I want to put my own standard size stereo in (52 plate WRX) how do i go about getting the original one out and where do i find the blanking plate cos its double din size thats in as you'll probably be aware...

Also the travel on the handbrake lever seems a bit excessive ie approx 15 clicks, is it just a case of tightening the nut under the cover a little?

What tire pressures should i have on the standard Gold 18inch?

And lastly is it normal for the turbo to whistle when it boosts?

Many thanks

Ps How do clean the MAF? I got running probs like a big flat spot and someone suggested cleaning that..