Originally Posted by vroomtshh

Ek refers to the shape. EE is 88 - 90, EG is 90 - 95 (ish) and EK is 95 - 99 ish

The number refers to the engine that it came with standard.

EK4 - 1.5 LSi vtec Eco model pish
EK5 - 1.6 Esi Vtec middle of the range number
EK6 - 1.6 VTi Uk decent model
EK9 - 1.6 Type R Jap model

I've never seen an EK7, or 8 but they may be jap spec models