Im currently rebuilding my Ka24de
you can get the rebuild gasket set at the nismo shop for around $170
The Nismo Shop : West Covina Nissan : KA24DE Gasket Kit
the timing chain assembly at FRsport for $180
OSK 13028-53F02 KA24DE DOHC Timing Chain Kit 1991-1998 Nissan 240SX
I just ordered my set, all i need is piston rings, Metal HG and bearings... and im set...