Next came the pillow blocks for the underside of the hood. I decided to use high quality/high density plywood for it's strength as well as its ability to take resin and be bonded to fiberglass.
I laid the hood in place, crawled underneath, marked where the hinges lined up on the hood, pulled the hood, then cut up the pillow blocks to match the shape of the trimmed area. I also countersunk some T-Nuts into the pillow blocks before bonding the blocks onto the underside of the hood.
I am stoked with the results; the pillow blocks fit great, they are below the tops of the fenders, the hood will need a shim or two between the blocks and the hinges (which is what I wanted for alignment purposes), so I put the hood on, drill through the hood and into the blocks so I can Cleco the hood in place and test the hinges, and don't you know it, my one concern about the hinges comes back to bit me in the ***; the trailing edge of the hood will not clear the cowl! Aarrgghhhh, hours worth of fabbing for nothing.
The interference isn't even close so there's no point in messing around with these hinges anymore; I'm on to what I considered to be a last resort; modify and use the factory Plymouth hinges. Why a last resort? The front tubes of the roll cage run directly in the path of where the original Plymouth hinges mount, so getting the hinges to mount was never going to be an easy or quick fix, besides the point the originals are WAY over-built for use with the glass hood.
None of that matters, I don't want a lift-off hood, I want a hinged hood, so I got to modifying the stock hinges, removing the springs, their mounts, and LOTS of excess material that was either interfering with the fit or just overkill in terms of weight and rigidity.
The rear mounting points were easy, there was an indentation in the fiberglass fender where the hole should be drilled, but it was getting the hinge to fit over the roll-bar that was a bitch. I started on the passenger side first (no particular reason) and had to remove LOTS of material from the bottom of the hinge in order for it to clear, but you can see it's in! Once I got the hinge to clear I fabbed up a bracket to mount the front, with about 1/8" clearance between the hinge and the bar, then tacked it in place. Once I got the passenger side done I used it as a template for the driver's side, which went much quicker.
Both hinges/hood mounting flanges fit below the fender/cowl height so I'm good to go with hinges that will pull the hood forward and up simultaneously. Just wish I'd have listened to my gut in the beginning and just moved forward with the factory hinges!
Once both hinges were mounted I test fit the hood, which will now need a bit more trimming, then fab up some new pillow blocks.