I do keep telling him to be careful that I might "borrow" his engine he he.
I think buying a complete 97 740 might be a good option then you get all the electronics you need to run it too. Should be relatively cheap these days, especially if the bodywork is bashed up
Twin side pipes and no muffers
(The diff hanger would probably need some work to stop it wrapping itself round the tank though)
Some clips to drool over:
http://www.youtube.com/watch?v=QX0YK7nNdR8
http://www.youtube.com/watch?v=j4evh-gkWV4
http://www.youtube.com/watch?v=e__FOteXdRs
http://www.youtube.com/watch?v=ocs1HRe15M4
http://www.youtube.com/watch?v=A57qo8rvKp4