Items that you have to decide before the build starts:
1. What is the purpose of the car
2. Build budget

There are many people who have been very happy just dropping in a standard refreshed Alfa Engine and Gearbox which keeps the total build cost's down..............and there are idiots like me who have spent an absolute fortune doing a total rebuild on the Alfa Engine and then bolting on a Sadev Sequential Gearbox.........To be honest if I was starting again I would take a different approach and go for a Toyota Engine as you get a lot more bang for your money even in it's standard configuration.