I'm in need of new cylinder heads for my 69 cougar with a 351w engine, 600 cfm holley carb and aod transmission. What would be the best car to use as a donor car to replace my currently damaged cylinder heads with. Will any car with a 351w work regardless of model any year. Or should i even use heads from a 302 as I've heard people doing. Thanks in advance. Trying to keep it budget of course.