70 dart swinger slant turbo build and mild restoration

Ok so the pipe I have which is 1 1/4 id isn't gonna work it will restrict airflow too much I'm gonna have to go back to the 1 3/4 and get the pipe even with the edge of the port so I won't restrict flow a toilet paper roll is the perfect size but I don't think it will hold up to the heat lol

Also I have a friend that has a plasma table and can input stuff into it so if anyone has a file I think it's a dfx file that can email them to me for the header flanges I'll make you a set and send them to you free of charge? He's gonna make them out of 1/2 inch I can probably have stainless ones built but u gotta cover the price of the metal I will pay him to cut them out I could also use the file with the different turbos flanges

Does anyone see a problem in the last pic with the 1 1/4 pipe that the inside diameter the ports are small enough already I don't wanna make them any smaller