as said, check out www.seriesoneturbo.co.uk very helpful site with lots of friendly people.

Plenty of people braking so parts aren't impossible to get, but sort after items in mint or good condition will be expensive and harder to source.

If you are able to sort paint and bodywork then it's a no brainer, this is where they can cost the most and end most projects.

Original spec is the money maker and the mentioned site has some nice rebuild threads with people trying to get back to factory finish so plenty of detail on there for that.

Some things will make it an even sweeter car to spend the time on, good history file and chassis numbers still in place in the floor will be the most desirable.