Yeah, I would think that 600cfm would be good for a 305ci. that is relatively stock. I wouldn't have any problem rebuilding it for you. I have a Jegs retail store only a few miles from where I work. I obviously wouldn't do much for the appearance aside from clean the grime and dust off. Keep in mind you'll still need to tune it in a bit when you get it. You can email me your addy if you want. I don't check PMs often.