So, story goes as such-

Im 19, got car finance and purchased a 01 WRX turbo manual from a dealer, 2 months later my engine pops. Big end bearing/conrods or something the mechanic said, and quoted 1000$ to strip it to find out.

Car doesnt have any exntended warranty, apart from AWN's (up to 1000$ engine warranty) So i figure under the implied warranty that the dealership should have to fix this.

(Car's running, just extremely loud knock/rattle-- before you ask, no i haven't thrashed it. It's rev limited to 5k, =S)

I've apporached them and informed them of the situation, and naturally they want something in writing, so im trying to find how to best approach the situation. Should i try get an RAC mechanic to come out and give an inspection report on what he believes it most probably is? As otherwise im 1000$ out of pocket just for a strip down, when the dealer may even try to deny responsibility...

Any idea's are greatly appreciated.