Oh for sure, I wish it was an S20 but then I think the price tag would have been (significantly) higher.
I have the 71A and will be rebuilding it, a very vital part of the project in my eyes. It's also my understanding that installing a later model 5-speed requires tunnel/shifter console work which I am totally opposed to.
I haven't decided if I want to run the L20 or build out an 3+ liter out of an N42 long block. I already set aside a Spirit Garage header + exhaust which would be overkill on a 2 liter...but first I have to get through all the bodywork.