itll be a little easier to drop in a turbo motor rather than converting an n/a to n/a-t, since a turbo motor is alrdy prepped for boost, meaning you will get lower compression pistons, and internals taht are a little more stout than the na, and as for transmissions stick with the turbo tranny its a little stronger, im sure you can find a clip somewhere for a 7m which should come with everything you need...take a look at
www.jdmenginedepot.com they might have what you are looking for, there are plenty of 7mgte motors out for sale right now...you could pick one up pretty cheap, your dodge is on fire by the way...haha ...are the flames vinyl or airbrushed?