The Cayman’s technical constitution was a deftly-handled one. On the one hand, it didn’t step on the toes (too much) of the 991 GT3, which kept its howling 9000rpm Porsche Motorsport flat-six.

but sampled all together in one car the resulting RPM Technik 981 CSR can be viewed ostensibly as a Cayman GT4-lite, or possibly even a GT4 alternative. The Hertfordshire-based Porsche specialist ...