If you cannot DIY the wiring changes, expect to pay $500-1000 for an auto sparky to do it (it's not plug & play like a V8 conversion), and this is on top of around $600+ for the motor, and another $500+ for a gearbox (your VR box won't work with the VS computer).
There's other changes like the alternator, power steering lines, fan/radiator, BCM (controls low-speed of the VS fan).
Then you also need to factor in your time, fuel, and labour to do all this chopping & changing, and chasing stuff from everywhere.