Looking for some advice, I'm trying to plan out my power train goals right now and I'm at a critical point. I have the fresh 306 in the car. I really want a nice broad NA power band. Any advice on an HCI combo that will get me that with the little sbf. Stock heads + valve train + Edelbrock rpm + fitech 600 HP efi kit for reference. Open to budget minded swaps* (budget being relative I know). Car is a 306 with a 4 cyl t5 and soon to have a cobra IRS. If I keep the sbf I'm going to get a t5z or upgrade the gears in the existing t5. Thanks in advance guys.