I be you can understand the frame welding, but when it comes to tacking the top bonnet, or fender support you need to be very carefull, the way that nissan makes this sheetmetal is very thin, Im talking like paper. So what you need to do is set you welder, tig, or what ever set up your using to a very Very low voltage, I would maybe recommend brazing.. what ever the case, its like a monster saving a spiderweb, very delicate. Good luck, Ill keep you guys updated on my project, and see if i can run over to the shop and take some inwork pictures.
Later
-R
