Hi all.I have a 74 roadrunner 360 manual 727 tranney 391 gearing mild cam alu intake 750 dp carb .the heads not sure they were on the motor when I got it.I would say they are smogersssss because the y have the air holes below the exhaust port.The beast worke very well tho.My Q is I would like a set of x or j heads.hard the find here.i have posted an ad in our local paper.a few sites say to just put in the 202 in thease heads.what do you all think.If i cant find a set of good x heads what next? and what heads should I look for.Thankssssss For any feed back.PS Go TONY GO.