I had a tunnel ram on a street rod ten years or so ago, and I can tell you that when I switched over to a single 4 bbl carb, I was amazed at how much snappier the throttle response was. But that is the trade-off for the bling factor a polished tunnel ram will give you. Yes, you would probably gain some hp by going to Sanderson's 1 3/4 inch shorty headers, 3 inch exhaust and straight-through mufflers like Dynomax Ultraflows. But IMO, since this is a street car, the difference would not justify the price. Nice engine bay, by the way. Keep the stroker. There is no substitute for cubic inches.