Dude...buy the JTR Conversion Manual. Here is the site: http://www.jagsthatrun.com/index.html
Develop your questions after reading it.....ALL of what your asking is in the manual.
I will leave you with this quote from the author of the Conversion Manual. "The internet has a lot of information. Some of it good, and some of it not so good. When it comes to engine swaps, there is a lot of mis-information. Be aware that not every "expert" on the internet is really an expert".
Buy the Manual.
Jack