Sorry Fernando,
G-10 were NOT a brand-new aircraft of brand new construction.
G-10 production began in Oct 1944 to August 1945, with approx. 6000 airframes built at factory, but again, these were airframes already built as G airframes, and then converted. The object was, through a parallel conversion process, to suppliment the new K-4 with repaired aircraft (G-14 and G-6's) of almost equal value in the cheapest manner possible. The K-4 was produced from July 44 to March 46, so there was really no point to start making downgraded aircraft alongside the K-4 at the same factory. All G-10's were repaired airframes, which were converted at factory or field.
There was 1 Handbook and 1 Manual made for every aircraft built. I have been through all the archives at EADS (formerly Messerschmitt AG), and NO G-10 manual, handbook or blueprints exist. I also have been thorugh a private collection (bigger than the Messerschmitt Foundation) with the same results. However, I have found many original Me262 and Me109K-4 Handbooks and manuals, both of which were made much less in number than the G-10.
The G-10's have a HUGE amount of differences, that are not consistant with a series production of a NEW airframe. Some have large tail with short tailwheel, late style hood or early hood, DB605D or DB605A, larger tires, older wing...and a combination of all of these or one of these. Also, most G-10's had the ORIGINAL Data tag of a G-6 or G-14 in addition to the upgraded data tag...clearly showing the upgrade from G.
Mike