Want to Buy WTB Gitzo G1570 head or similar for a Toyo 810 G

Hello,

I'm looking for a rock solid tripod head and the one I think would work at a reasonable price is the Gitzo G1570 serie 3.
it would be to support the Toyo and a Nikon 450mm lens.

I'm open to any suggestion.

Thanks

I use this on my Toyo 810G. It's rock-solid, and the build quality is outstanding.

Luland Produced Super Large Format Camera 3D panorama Tripod Head 150mm TH-150R

I sometimes use a Gitzo G1570 with an Agfa 8x10 view camera with a 14"/f6 Wollensak Veritar. That's stretching it but it works for me.

Thank you both for your feedback I've contacted Luland to get some information about cost

Any other products or brand I should consider?
I already have a Manfrotto + QR 410 junior head but I feel this is too light when I have my 810 + 450mm lens all together.