electrical fault HELP

[bish]

my s12 silvia has now been in the garage for 3 MONTHS !! it ll started with no spark at the plugs, an auto electrician said it was the power transistor/coil pack amplifier which i ordered from JAPAN and it still didnt work !!, ive put another distributor in along with a new coil pack, even managed to find someone with a silvia who kindly let me try his ecu, power transistor, distributor and coil pack off a running car and it still wouldnt fire, the suto electrician has given up and so has the mechanic, they told me to do the unthinkable and SCRAP the car, ive owned my silvia for 21 years and its been well looked after and the bodywork restored, if anybody has any ideas please let me know !! IM DESPERATE