Minor update: Been working on the heads, figuring out how to polish the ports without dicking over the valve job. I have come to the net result of putting some masking tape on the valve seats to act as a warning zone while applying assloads of care and caution. Also nabbed what seems to be a nodular iron 350 crank, on account of the bigass N on the first counterweight, off of ebay. Of course, based on the pictures, the crank isn't machined for a manual transmission pilot bearing, but I found a blueprint detailing the needed work done, so having the engine machinist take care of that while it's being ground for my heretical Chevy rods and balanced for my lighter components shouldn't be too much of an issue.
Plus, provided the nodular crank is in workable condition(always a dubious prospect with ebay), it should be more than durable enough to handle any further power-adding upgrades I do in the future.
Also did some experimenting on the front clip to try to get my '86 blade grills to align better. First I tried an adjustable setup with springs inbetween the clip and the grills, which kind of maybe helped a little but was overall unsatisfactory, on account of the springs being way too light to properly tension the grill and keep it from flapping around. Though, with some heavier gauge springs, some washers, and longer bolts this may have potential. Second I tried shimming them with washers, which provided much better results, though still nowhere near where I'd prefer them to be. I suspect that it may be necessary to precisely dremel some reliefs in to give the proper angle and protrustion, which is going to have to wait until I take the front clip off when I pull the engine.
Also, the 28 year old plastic the bolts screw into isn't holding up so well, so when I pull the clip I'm going to drill them out and install some form of threaded insert with ample loctite/super glue to discourage pulling out. Of course, good old Helicoil is under consideration, on account of that I used them at work sometimes, and they're cheaper. On the other hand, their spring-like design seems like it'd allow them to uncoil themselves right out of the plastic when any kind of torque is applied, which is sort of an undesirable outcome. Or I could just JB Weld the holes then run in a self tapping screw.