That price is nuts, i hope that is for a totally new long block. A VR6 would be overkill of 300+whp unless you want to make it with a large turbo and low boost. Honestly you can either rebuild the block and head you have now and probably get a turbo upgrade with the $6k. I would rebuild the motor with some new rods and get a turbo kit to go with it, either 50trim or 3071r depending on the $ left over.

 

Did you see the damage? I would love to see pics to see how it compares to mine.