First.... lose the attitude that "it will be a ****** **** *** car if....". It's an antique, you know the value of, and if you built it back to OEM, you'll get good money from the right person for it.
Second... if you keep the car and build it....then lose the attitude that "it will be an ****** **** ******* *** car when I.....". IT's not going to happen, your a home owner now....a car is not worth it to go soo deep into debt, waste time, and if something happens, then your going to be living from paycheck to paycheck....just like me. Sure you can score cool deals, have friends fab things, but the bottom line is...it's going to get beat up one way or another...some granny might not have taken her Geritol some morning and she not fully awake to see your baby in front of her...or you'll join the club of fires, flips, wear and tear, or the anti-Christ.....rust...like the rest of us dreamers and builders.
Third.... Projects like this will never happen. Since your a homeowner, making decent wages, wife works, win the lottery.....have all the money in the world.... your still going to find that tuning a " 4 injectors controlled by an AM Crystal oscillator" thats over 30 years old is going to be too much of a pain in your ass than it is worth. Just get a haltec, new RC injectors, load the engine up with sensors, and tune it by a laptop and allow the engine to actually breath and work for you...not you working for the engine. $1000-1500 for a new system that is tunable and parts that are available by second day air-mail...... is better than you turning into an old mole saying "when the parts come in....or when I find them....then I'll take it to the track and show you." Trust me...wires and tube's made in the 70's age and deteriorate even though they are sealed in a vacuum tube...the metal processing in those days were focused for quantity, not quality.
Fourth.....bring back my damn engine lift....ASAP. I'll be damned if your going to hang onto that lift until you built the motor 3 years from now and want to install it into the car... I even forgot when I loaned it to you, I needed it a 2 months or so ago....and now I really need it...because I would have liked to have gotten to an autocross event sometime this year... Why the hell did I waste $25 for the CART membership?
Fifth.... Slap an SR20DET, RB25DETT, or a 3 rotor in it. If your going to change the car a tad "retro-ing it".... might as well go for the bang-per-buck Ebay engines. Or invest and just go all out and slide an LS7 in it.