ok, most of the tools and items that moose described will work for you. the only thing that i did really different was use part of the hinge for spacers.
first, i started by removing the hood. once that was off, i pulled the hinges off. you have to remove the cowl to get to the bolt that holds the hinge on, there is only one! once i did that, i cut out the rounded corner at the front member. where the fenders meet the front end. then i used the hinge mounts to find the spot to drill holes. i think by this time i had found the center of the tube on the hinge, and the center of the front end. i had to shrink mine by 4". i ended up keeping and using the remainder of the tube.
i placed the hinge on top of the fender drip rail, marked out the holes, and drilled them out. i think i used 3/8 x 1 1/4" carriage bolts, and flange nuts to secure. where i spliced the cut for the hinge tube, we ended up taking a 1/2" bolt, cutting the hex head off, and threading it into the tube. perfect match. once i had that hinges mounted in, i layed them down as if the hood was on and closed. i marked out the edges of the top hinge onto the fender, placed the hood on and transfered the marks. i riased the hood back up, using help from my buddy, we mounted the hood to hte hinges. i used the top hinges to mark holes, and used the original keeper bolts fromn the buick. heres the tricky part.
we at first tightened up the fron side, and when the hood closed, it bowed up in the rear,and wouldnt fir right. we then pulled those out, and tightned at the rear, and then everything went well. the only problem then was that the hinges mounted on the fender kept the hood up too high. we used the remaining part of the tube, the 4" that we cut out, and cut those to 1" spacers. using thoose dropped the hinges down, and everything cleared. getting clearance fot the oem hinges, we remover the wiper bottle, dropped it down further into the inner fender, and on the passenger side, we flipped the big fuse block over, in the same spot, and moved one of rhe relays. we used the factory bolts to put the oem hinges back on, and cut them about half way into the curve. i still need to figure out a slider for the hinges to slideon. right now when i close the hood, i try and position the oem hinges so that they just slide right into the slots remaining from where theey were originally. this keeps the hood closed. absolutely no bouncing around. ive had it at highway speeds, and havent had any problems. now for the pics i do have. i will try to get some pics of the fuse block and relays and where i pit them. once all was well, we welded up the slpice in the tube. if anyone has any ??, just ask here, and i will do what i can to answer.