need help

I did search and I did not find anything.
I need help.
Most of You know I'm not a new one here. I'm customizing models for about good 15 years.
But I m thinking about new project and I need some help.
You all heard about my 1/18 BENZ S500 LORINSER PROJECT.
http://www.automotiveforums.com/vbulletin/showthread.php?t=396222&highlight=LORINSER
But lets forget about this project for a moment.It's still in progress.

So I'm thinking about another BENZ S500 LORINSER PROJECT.
I NEED HELP with this idea HOW TO ?
All of u know how is S500 LORINSER looks like
http://files.automotiveforums.com/gallery/watermark.php?file=/503/324167s500lorinser11.jpg

But Lorinser has a very interesting model,
THIS IS HOW IT LOOKs LIKE
http://files.automotiveforums.com/gallery/watermark.php?file=/503/324167s500lorinser2.jpg

http://files.automotiveforums.com/gallery/watermark.php?file=/500/3241670.jpg
OK now so I'll take maisto 1/18 S500 or S55 and Auto Art 1/18 CL500 LORINSER
Now here comes my question how do I cut front ends of these two cars and swap them?
I did it once before with plastic model. I had a pontiac fire bird convertable and trans am coupe,i wanted a trans am coupe,so I cut it and swapted, but that was easy,because it was two identical cars, i cut it so perfect that i didn't need to do anything but glue it together.

But this is metal and if u look closer ther is a difference between them at the fender and door.
i m not worrying about anything els because its the same measurements wide wise and lenth wise for both front end is the same.
HOW DO I DO IT ALL?WHAT DO I USE TO CUT METAL? WHAT KIND OF PATY DO I USE AND HOW AND HOW AND HOW????
IF SOMEONE CAN HELP and can give me detailed lesson on that or point me some where at the forum where can i find my answer it would be very appretiated.
THANK YOU my felow custom builders.
:smokin:

usev a dremel and a cutting wheel for cutting and epoxy putty to put it back together

thank you.
but like i said i need real detailed answers. how do i do it what kind of putty do i use,what kind of drill?
i really need details how to do it ? when it comes do that im new to that.
and like i said if u take a look at the CL class fender and the door,and then at S class fender and the door u will see big difference.
so how can i do all that to make it happend?
i realy need a lesson here in detail please someone?
i realy wanna make this happend.
:smokin: