Looks or rather sounds like I may have just destroyed my RB25det, started as loud creaking sound taking off at the lights not fast, thought first of all my diff had blown, then progressed to loud knocking, limped home popped the bonnet and discovered the knocking which is now LOUD!! is coming from the engine my best guess granted that im far from being any kind of mechanic is that theres been some kind of internal detonation, cracked head/pistons/rings oils leaking from head gasket, anyway early days to make any assumptions havnt had anyone proffesional look at it yet but since I was allready considering ripping out the engine to do a full respray I thought this might be as good a time as any to think about an upgrade, thought about the RB30 bottom end RB25 top deal a few skyliners seem to be going for but was wondering wether its posible to fit an RB26dett in a GTST? like I said Im no mechanic but Im eager to learn and just didnt know wether its possible to take the all wheel drive to rear wheel drive, Ive got another car to drive so I thought might as well make the most of a bad situation any advice would be appreciated