doug headers mini starter

Ok I'm new here but maybe someone has seen this problem before. The small block in my 65 Dart has Edelbrock heads and a bell housing from a 70 E body for the 10.5" clutch with the Doug's headers and i can't seem to find a mini start that will fit. The Mopar Performance starter will not bolt up so I went with the Powermaster adjustable starter and it doesn't seem to want to work any better. I went with the 10.5" clutch because when I dynoed the engine and it made 585hp at the flywheel no 10" clutch would live on the street so I used a Mcleod double disc set-up but now I may have to find a way to pull start the engine. Thanks for any help you can give