i recently purchased a 1967 delta 88 super rocket convertable, but it comes with the 2bbl carb i have been looking at some intakes and 4bbl carbs. i have found a used intake for the 425 for 150 plus shipping and 300 for the carb. What carb do you guys recommend, and also should i just spend the extra 150 for the performance intake? how much of a difference or hp gain will there be? Also, if anyone has any parts or old intake or 4bbl carb that does not need to be rebuilt please let me know. The interior has been redone and trying to finish it off and get some more power