Do you have the new hood fitted to the cab, specifically the top cowl with the cowl seal in place? The rear of the hood needs to have an even gap of between 1/8" and 3/16" all the way across with the hood latched and the fenders lowered as far down as possible in the rear.
Once you have the hood adjusted as described, you are done with adjusting the hood. Don't do anything else to the hood.
Now you need to move the fenders up in the back until the rubber bumpers on the underside of the hood are contacted.
If the the front points of the fenders are not even with the front of the hood, you will need to adjust the threaded rods which go between the fenders and the cowl until the fenders and hood matches up evenly. This should miraculously result in alignment of the funky curves of the top of the fenders and the bottom of the hood to match up. That is, if your aftermarket parts are made correctly.
You need to try this first before you get frustrated thinking about that aspect.
I can take a perfectly fitting original hood and fenders off, and try to put them back on and wonder if someone snuck in and did something to my parts before I finally get them back on right.
