John, a full copy of the parts list for the P300 is on Eurospares' website
www.eurospares.co.uk
If you convert your ignition to electronic you will solve your problems and take away the need to replace points in the future. You will get more consistant acceleration also. There are a number of people who know a lot about the P300 right here in Australia.
I could refer you to the right mechanic (City Performance at Artarmon) and wheel alignment/steering place ( Spinning Wheel Woolloomoolloo) to have you car running right if you are interested