My previous XS Power manifold developed a small split at the join. I bought a new one to replace it (other makes were well out of my price range), and had Toyota GT fabricate a support for, as recommended by Chris Wilson.
James at Toyota GT was kind enough to take photos of the work as they went along. You can see the fabricated support in a couple of these pictures, and I quote... "it will support the world!"
I can't really tell what's going on in a lot of these photos, but I thought you guys might be interested.
BTW, I've still got the old manifold available if anyone wants it. It would need a minor bit of welding, but this one is flush on all edges, so you'd save a fortune over buying a new XS Power manifold and then spending a couple of hundred extra getting it machined, like I had to. (But yes, all in it was still only a third the price of buying a BL manifold *without* any custom support.)
http://supra.just2good.co.uk/myBlackSingle/toyotaGT/workshop002.JPG
http://supra.just2good.co.uk/myBlackSingle/toyotaGT/workshop004.JPG
http://supra.just2good.co.uk/myBlackSingle/toyotaGT/workshop006.JPG
http://supra.just2good.co.uk/myBlackSingle/toyotaGT/workshop009.JPG
http://supra.just2good.co.uk/myBlackSingle/toyotaGT/workshop022.JPG
http://supra.just2good.co.uk/myBlackSingle/toyotaGT/workshop032.JPG
http://supra.just2good.co.uk/myBlackSingle/toyotaGT/workshop035.JPG
http://supra.just2good.co.uk/myBlackSingle/toyotaGT/workshop036.JPG
http://supra.just2good.co.uk/myBlackSingle/toyotaGT/workshop037.JPG
At the same time I needed new bushes, new crank seal, new rear diff seal, new rear wheel bearing, new clutch, plus sorting of leaking oil return line and fuel return line. Not a cheap week!
I can try and take more pictures of the support if you like, now it's all in situ.