What intercoolers will fit in an '87 5k? I know the 5kt intercooler will fit, but it's impossible to get here used, and new is expen$ive. A Volvo 240/740 intercooler is _huge_, but I think it will interfere with the front engine mount. A Saab 900 intercooler is small, is it big enough? Any other intercoolers from a european car that will fit, and are easy to find used? ES