Sounds like it runs well and you just want to tinker? I can respect that. HOWEVER- IMO if it runs well Id leave it. The weight loss for an alum intake will not be noticed by seat of the pants or MPG. If it were me Id take a sat afternoon and carefully degrease prep and paint the intake valve covers and whatever else can be reasonably re painted. Heck mask off the intake and paint it silver gray like aluminum. My experience with with the swap your asking about is-while not complicated you may run into clearance issues as the carb will sit higher the throttle and kick down will need tweaking ect. not deal breakers but not a take of one add the other and done deal.