KnightRider has a nice Reliant model, maybe not perfectly accurate, but nevertheless... I think he also allows altering it for personal use... if I remember his Read Me files correctly.
As for a Bird of Prey, Wil Jaspers has a very nice one, properly textured, Fabio's BoP is nice... The Klingon BoP is the model I see least of... in terms of availability...
AMD Ryzen 9 5900X Gigabyte RTX 3080 Gaming OC 12GB 1TB NVMe SSD, 2 x 1GB SATA SSD, 4TB external HDD 32 GB RAM Windows 11 Pro
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As for a Bird of Prey, Wil Jaspers has a very nice one, properly textured, Fabio's BoP is nice... The Klingon BoP is the model I see least of... in terms of availability...
Gigabyte RTX 3080 Gaming OC 12GB
1TB NVMe SSD, 2 x 1GB SATA SSD, 4TB external HDD
32 GB RAM
Windows 11 Pro