These days Megajolt jnr solves ignition issues for about the same price as a new distributor with full windows 95 onwards interface and full programmability settings with more than one ignition curve available for different fuels.

All suzuki engines unlike other makes have front provisions for water inlet and outlets due to intelligently designing them to run on fwd and rwd in all configurations.

Vtec and non vtec heads are available for all of them and the 3 main models to choose from al with rwd boxes available

G series = 1.0,1.3,1.5,1.6 (weight 55kg note: bare rockers to sump)
M series = 1.3,1.5,1.6,1.8 & sleeved to 2L (weight 70kg)
This model has removable sleeves on all capacities & same block
J series= 1.8,2.0,2.3 and 2.4 (weight 77kg)

The J24 weighs the same as an A15 eg. 2.4 versus 1.5