Well after getting a tmic I figured the stock scoop is way too small to be effective. I wanted a larger "factory" looking scoop that looked like it belonged there. RS and WRX scoops look way out of place imho. I used a stock old scoop I had laying around as a base. The opening ended up being about the size of a gen 2 Outback/GT scoop, 3/8" taller than stock. Anywho here are some pics.
1991 Turbo Sedan, Aspen White 5MT, Sold RIP
1994 Turbo Sedan, Crimson Pearl 5MT, from British Columbia-no rust!
Basically I just took a stock scoop, cut the top part of the scoop at both ends (just before it curls down to the base). I cut almost all the way leaving a 1/4 inch at the back, and curled the top of the scoop up 3/8". I then scruffed the inside of the soop and added 2 layers of fiberglass cloth with polyester resin. Then flared in the raised scoop to the base with regular bondo (where you can see the gray primer. Viola, now I just need to get a color matched can of paint.
here's a pic, I just cut to the ends of the arrows, but not past them
1991 Turbo Sedan, Aspen White 5MT, Sold RIP
1994 Turbo Sedan, Crimson Pearl 5MT, from British Columbia-no rust!