I am not sure if you have been involved with any other Supra resource sites before but I have found it to be really helpful to anyone who owns one of these cars. I have had mine for about 4 years, it has 230,000 miles on it, so it has experienced a lot of small and major problems.
Personally I have designed, and built race cars and off road vehicles all my life. I began building my first car when I was 15 yeas old. When I see someone driving a MkIII I have two reactions.
1. Either I feel sorry for them for how much it costs them to pay someone else to keep it running.
or
2. I have the greatest respect for them, for taking on the adventure of keeping it running and in good shape themselves.