Mandrake, do you realize that in addition to fluoridated water, why, there are studies underway to fluoridate salt, flour, fruit juices, soup, sugar, milk, ice cream? Ice cream, Mandrake. Children's ice cream!
some answers:
1. use a 75-76 gas tank for the turbo motor. They are almost a direct bolt into the 240z chassis, since 77 is when the Z cars changed the spare to a space saver and used a different fuel tank.
2. Pete Paraska wrote up a great tidbit about autometer gauges and wiring:
http://alteredz.com/gagecalibration.htm
3. I have an NPR small intercooler for sale (cheap). Core measures 20x8.5x2" thick, 2.5" in/out. Caveat is that the end pipes were cut off for a trial fit, but the IC itself is not damaged. I will see if I have pics at home, PM me if interested