Here you will find a selection of CAD files
FIAT SOHC 1300/1500 exhaust manifold pattern
SOHC exhaust manifold pattern
(after you have downloaded it rename to .dxf to open, wordpress limitation)
Disclaimer;
No responsibility or liability is taken in offering these files for download. If you manufacture a part to these plans or specifications – DO NOT expect it to hold together at 10,000RPM. These are ‘finger in the air designs’ and may or may not work for your application. Consult a mechanically minded engineer if you do not want to kill yourself.