I had a 300whp turbo D, It was fun but i would've got waxed by a 215whp K or H2B. And ur k tranny can be 5 or 6 speed. If u dont mind me asking, whats ur budget? That right there will tell u which direction ur going in.
I don't really have a budget. Ill be doing this swap over the next year or so. I'm the type of person that saves up and buys parts and will install all of them at once so you never know what was coming.