Help! Headers 67 dart 340 brodix heads

From the info I found, the SB Brodix heads come un-drilled on the exhaust side so they can be drilled for headers for W2, W5, or W7. If yours are drilled with a W2 pattern, TTi makes a header that will fit. So does Hedman. Neither are cheap. You could also just get the ones you have fixed and recoated if they already fit.