Nice!
Those '79 Notchbacks are very light cars!
My Dad bought a silver '79 Turbo Notch 4 speed (SROD) that I eventually got to drive when I went to college.
It was the old school 'draw thru' 2bbl carb turbo 2.3L, non-intercooled.
I dropped the restrictive Cat with a 'Test Pipe' (remember when they sold those!?) and added water/alcohol injection directly into the carb.
It wasn't bad performance for a late 70's/early 80s car, but it would vapor lock on hot days because the carb sat directly above the turbo.
I sold it when I bought my '85 GT 5.0.
Ford went to the EFI 2.3L Turbo in '83 IIRC.
I've got two 4eyed Mustangs now, see my signature.