For starters heres a few questions

1) Front or Rear engined
2) Fwd or Rwd
3) can you convert the current subframe if fwd or would it have to be a manufactured unit.
4) legality of conversion would you have to get the conversion tested ?
Theres loads more questions but for now I think thats a start, If anyone knows some answers or has some thoughts please let me know. Or if you could point me in the right direction towards a suitable website that may contain some answers.
I beleive that anything is possible, if you want it enough, at the moment I havent got a clue so would need a hell of a lot of input and thought before I really consider doing this.
Cheers
Dan