hi robster, forget the rb20 motor even in turbo form , they are just to small in engine capacity, sr20det is becoming a popular flavour for a conversion but can get pricey, for a everyday driver you have 2 choices by a vehicle in need of restoration or buy a restored vehicle either way your gonna end up spending 20k plus, there has been quite a few top condition fully restored 240zeds in n.s.w of recent around 16k if you buy a restored 240z you would expect to see a photo album of the progress standard of work ,, buying a un restored car requires a thourough investigation from front to rear , floors sills firewall spare wheel well rear hatch bezel , then interior , unless you want a customized car it would be more viable to by a recent restoration and do a few performance mods to the original running gear,. cheers dazzed