do u mig weld ?
u can shave off the stock exhaust manifold flange
u can find some neat factory headers on some late model engines(especially on american cars). Dirt cheap
buy a spare for the 'bends' and hack away - lol
built one one long ago as a fun project. Got the donors free, so I had nothin to lose
ford ranger 2.5 look like a good base to mutilate