No that would not include power locks. and if that is US Dollars you are talking....you may need the '78 & '79 to provide parts for the project car '80. If you are not mechanically inclined, you may wanna reconsider.
I look at my Spiders as a hobby. i promise you that if it is 30 + years old, it does not matter who made it; it will need attention...every year. The FIAT acronym DOES NOT stand for fix it again, Tony. It stands for FLING IT AROUND TURNS! Properly maintained Spiders are no less reliable than most vehicles half their age...and in personal experience MUCH more reliable than the similar age Triumph or MG offerings.
the second half of the model year, the 1980 went full swing into fuel injection here in the states. Previous to that, SOME '80's were f.i. but the majority were carb'd. So, yes; fuel injection would make sense. However, after an accumulated three decades, so many cars have traded so many different owners that it is no longer possible to predict which modifications were done when....or what parts swapping has occured over the years.
Be careful, this is not a hobby you can enter into cheaply. you will get what you pay for, and $1500 does not buy much. A good project car sells for $2-2,500 and up; and that is just entry cost.
if you are not handy in the tool box, you may be happier with a '95 Miata