Some photos of the car(I'd open a proper thread if I can get it work and out of the garage at some point!):
Car was working perfectly before getting parked for the last 7-8 months. Car has half tank of gas and now brand new battery. I will check what you guys suggested and take it step by step.
Anyways I' more worried about the engine not starting because the oil leaks is something I was almost expecting. Happy to hear that it isn't as bad as it looks.
TT77911S what do you mean the good heads?
About the 'Toyota throttle' I meant the sticking throttle situation. Where the throttle sticks WOT and stays there for flip seconds even though you have lifted. Here is a mention:
http://forums.pelicanparts.com/porsche-911-technical-forum/828778-help-few-scary-toyota-moments.html
This happened to me a couple of times on track but never on normal driving/cruising. (Apparently there are multiple things that can cause it pedal side, bushings, throttle body side).
P.S: About the airbox, I'm pretty sure my airbox is modified inside...(The fix to stop the melting due to backfire) but has been working like that for years and I doubt that has something to do with my new found problems.