Good morning;
Nice modifications, I like 

It's a semi-bolt on affair that required some shade tree ingenuity to mount the ZG oil cooler, aftermarket GPz radiator, and securing the rear undertray.  Basically the oil cooler lines are a tad short so it goes behind the lower frame mount with longer bolts serving as studs.  AliExpress radiator needed two .5 inch rubber bushings, longer bolts & nuts, and a trick to get in there because the end tanks will interfere with the frame.  I couldn't find a GPz lower tray frame that goes under the engine so again thick bushings & longer bolts to the oil pan worked out.  The windscreen is an AliExpress part, it's a sport touring style slightly taller.

I didn't keep track of cost, you know how these things add up.  It probably would have been better to just buy a GPz900 but wrenching on bikes and cars are a hobby of mine.  Keeps me sane.

Here's my 1986 GL1200. 

I finally got my 1985 Concours/Ninja project running again after several setbacks which included a blown engine due to not replacing the rod bolts after a 2mm overbore with ZX11 pistons on 88-89 ZX10B rods and oil burning from wobbling valves elongating the seals because I couldn't resist tear dropping the guides during head porting. Lessons learned.

Anyhow, now with a re-ringed stock bore and eBay stock head wearing the GPz900 cams, carbs (Dynojet kit), and Vance & Hines advanced ignition timing plate she's not as spooky explosive as before but still fast enough and much more controllable. Yesterday after having it inspected I pulled out onto the four lane road with enough throttle to induce a power slide which was easily recovered from.

Here is a different view of the eclipse https://www.star.nesdis.noaa.gov/GOES/fulldisk_band.php?sat=G16&band=GEOCOLOR&length=24

That's a helluva writeup. I'm going to have to remember that for when I finally decide to add a C10 to the stable.