318, 383 or other? Which one

The combination you have now is'nt bad...get rid of the carter carb,and get yourself a holley carb,those 4.88's are a bit extreme for your combination,i'd go with 3.91's or 4.10's,lose the air shocks and traction bars get a set of drag shocks and a pinion snubber..not knowing whats in the 454,but if its not too radical i'm willing to bet you hang right with him..nothing i LOVE more then smoking chevys..:-D