I am about 2 busted knuckles into a water pump replacement on my 1974 GTV with Spica injection. It has been a great car for weekend cruising and one trackday over the past 10 years but the engine is tired, with a fair amount of pressure in the crankcase, which probably indicates worn rings. So my water pump replacement is turning into a possible engine rebuild. This presents another issue since I have a twinspark motor in the garage, which also needs a rebuild... maybe I should mothball the Spica/Nord setup and install the Alfa 75 twinspark along with its stock Bosch injection or else put some webbers on it. Aside from the cost to do either engine, what would the group feel might enhance or detract from the value of the car? I don’t plan on getting rid of it anytime soon, but that can always change as life priorities tend to evolve. Any pros/cons to consider?