Would you prefer to order the u2600+8 "FANTAYSY" console "READY" with assembled VCS 2600 ICs? Then order the u2600+8 "FANTASY" (READY+) console, send your ATARI chips (TIA, 6507, 6532) or an old ATARI VCS 2600 console to UNI64, then you will get back a fully equipped and adjusted u2600+8 "FANTASY" console. The 1st installation service includes a Teensy 4.1.
Further wishes such as an HDMI output? No problem! Simply add a 2nd installation service for the HDMI output (S-Video -> HDMI) to your console order. If a different video output is required, this wish will also be fulfilled :-)