Because alot of people have way more talk than wallet? Your "project" would take all that wallet and a bit more Rad. A 469HP N* and supporting "goodies" is gonna take alot more bank than an LD8. Two words here. Holley Commander. If you have as much cash/mechanical experience as desire and rhetoric, They are now available from CHRFAB for the N*. $1000. I've lost the interest in going further with mine, don't even spray much anymore, but IMO, the Holley Commander seems the most credible way to go. If you were actually going to beefup your GXP.

Hi, In not sure if this has been said cause I honestly just dont want to read all the posts but the differences I can see from concept to production are; silver bumper grilles, silver trim peice around the interior door handles, silver button on the shifter, silver a/c vents and slightly different gxp badge with some red in it. -----that said factory diff from above; silver interior door handle with carbon fiber trim peice around the handle, carbon fiber a/c vents and silver top peice on the shifter.

I love the idea ur doin with the concept car. i did somethin similar with my jimmy other than it was my concept. LOL! I wanted it to look like it came with a factory sport package. chek my jimmy and ssei.
http://www.cardomain.com/ride/2978275