Not sure. I know the heads are different with the carbed motor. I'm not sure about the exhaust ports. You may also have clearance issues if there are differences in the sheet metal stamping in the firewall or inner fenders. You didn't say if they were shorties or long tube, but the long tubes could further cramp your clearance. I asked one of my Ford techs, and he basically said the same thing. It's kind of a crapshoot, and it looks like I'm not a ton of help. I like to try, though!