Be careful Fenix_Longbow, the last thing you want to do is go ahead with a 15 to 20k build off the back of an engineer who has a poor interpratation of the guidelines. When I rang around for my car I found every engineer expected different things. The rate these guys come and go, by the time your finished the guy who told it could be done is likely to be gone.
Your build will be cool but something boarder line like a 4agze in a 1000 you need to be 100%. You can research your self on the rta website.


Have a look on page 3 in the notes, second point. Under the matrix.
guidelines for light vehicle modifications