We are starting to restore our 1971 FJ40. My grandfather bought it new. It still has the original engine. The carburetor had previously been replaced. I want to keep it as original as possible, but I'm considering upgrading to a fuel injection system (possibly a Howell or Weber). Either fuel injector would require a different style air filter to fit under the hood. Do you think this would hurt the value of the vehicle? It will be kept in the family though and handed down to my kids when I'm gone. I guess it's a question of performance vs. keeping it closer to original. Thanks in advance.