Forgot to mention LJ would also need the mazda rotor button.

Best bet though as Gav mentioned is to mod a later g13bb or g16b post 1998 rear camshaft electronic pickup or other hall effect sensor.

Gav, no need to go crazy with the rebuild in the future, all you need is an Indonesian or japanese sourced g15aid or g15b bottom end with forged rods. Theres a gti in Peru with a naturally aspirated g15/g13b head combo on 38mm bike carbs with the world quarter mile record for NA and street tyres. While in NSW there was a g16b/g13b head turbo with 412hp or similar HP to the twin engine cultus.

Capacity is the way for the G series they are an amazing little donk.