you need to replace the Dizzy. there is no go gettin new parts on that. once the CPS goes. the dizzy is done. you get a new one and there will be no more code. the haynes maual will tell you the same thing. they say for a CPS replace the distributor.
one more thing...you said its a code P1381? if thats the case..then this page...
CLICKY says that its an ittermittent problem. that to me sounds like a bad connection maybe? or a wire came loose somewhere between the distributor and the ECU. if it was a P1382 then it says no signal. that means bad sensor. in any case. you should replace it anyway. you cant replace the sensor. you have to replace the Dizzy.
hope that helps
and the canadian SI like stated above is the same as the US EX. they have the SiR with the B16