if so,
how much will it cost,
is it really worth it,
should i get a swap at all or just build on the the existing SC300 engine , and if so what parts do you reccommend?

Not sure, but nice Idea. Good luck.

It will fit and has been done a lot of times. You just have to search around on the net a while to find out how to do it.
http://www.intellexual.net/faq.html#021