i did this in my garage all i needed was a thermo fan and someone to wire up ecu if your in sydney this bloke will do it jim 0415904947 your standard rb20 box will bolt straight up if the engine is standard it will last but with any more than 200kw at wheels you will blow the box this happened to me 3 times also use rb20 engine mounts put egine and gearbox together and put it into car in one hit. much easier. one other thing is heater hoses jus make small adapters on passenger side when goes through firewall any other ? pm goodluck