No, I do not have a scanner but as a photographer I could take a picture to the same effect if that would be of use for you? I ocasionally do some repro-photography and have the nescessary equipment for that, which would create a picture as accurate as a scan.
As for the sketch, I went from a picture taken with a wide angle lens to save me some time. The above took me some 5-10 minutes all in all, but still should be within (when enlarging to full scale and taking into account the correction for the perspective of a 28mm focal length lens) 1-2" of the original (car itself) so it is quite accurately the original hood I used and extended towards the front. Here is the picture I used for reference
http://i3.photobucket.com/albums/y96...s/MCR_0013.jpg
That´s my thirdgen, and yes, the rims have to go
From memory the 1st gen hood is a bit less wide compared to the thirdgen hood so fitting would be difficult. Might be misstaking there though. Aftermarket companies offer 1st gen style bolt on cowls however.
Completely extending the original hood I think is more problematic then cutting the nose back. The hood slopes down quite drastically on the last bit so you would have to change the curve the hood makes, then extend it to prevent the Nissan Silvia look from happening (compare with this
http://www.240sx.ca/ff_i/mercedeh%20sil80-2.jpg) and re-inforce the bit you weld on to prevent it from curving up when it catches wind.
You would also have to build on top of the stock ABS(?) plastic nose which is problematic. If you would use glassfibre it would be hard to prevent it from cracking/chipping paint at the joint to the original nose cone.
From a technical point of view rebuilding the nose completely is easiest. You can still use the ground effects though as the come seperately.
In the sketch I made I reduced front overhang as far as possile by re using the original light mounts, re using most of the original impact bar. Some cutting will be required there to place the ground effects as far back as I did located behind the original nose cone, and re using the ground effects.
It would be interesting to see a version with extended hood however. Do you intend to use smaller lights or place them further down?