Anyone reading those magazines and who doesn't live in the UK asks: "What's a Hybrid". Oh it's very simple. A Hybrid is a cross between Series vehicles and more modern Land Rovers.
They are a testimony of the skills or lack of them of their builders. Quality varies from factory-like
to simply horrible.
A typical Hybrid does not exist. However some general tendencies can be seen. Mostly coil springs are used together with an Series body.
A good starting point is by choosing a new chassis like these one from Designa Chassis. They make all sorts of lenghts like 109" Series chassis which will adopt coil springs etc.
They cost about 1100 £ for a 109, cheaper for 88's and Lightweights