Are you trying to keep it stock? If not look into the MicroSquirt approach. It can be very cost effective.
It us difficult to put together a stock system from scratch. There are a number of parts that don't play well together.
Check out and read everything on Brad Anders site before buying anything.
https://members.rennlist.com/pbanders/ I have a complete system sitting in a box that works. After you do your research let me if you don't find what you need let me know.
If you are looking for something modern that makes the car very drivable consider a modern system. It is not headache free but it is much easier to tune.