Carvinguitars and basses from 1964 until 1978 had bolt on Höfner necks, and the SH225 was made by Höfner and sold under the Carvin name.
Carvinguitars can be ordered with a koa body and maple neck (which would be standard on a koa model, unless otherwise specified), or with a koa body and 2-piece koa neck, or koa body and 5-piece neck in several combinations.
Carvin's standard walnut body is used with a maple neck, but a 2-piece walnut neck can be ordered, as well as a walnut or figured walnut top used with another body wood.