Summit suggests a somewhat pricey trick flow spring kit for use with their E303 plus cam which I am considering. Seems like overkill to me for what I am planning to do. I have an '88 low mileage roller 302 and a set of GT40 heads for my '83 Mustang to replace the aging flat tappet motor installed in it. I heard about bee hive springs etc. but was wondering if anyone had a suggested source for springs. This will be a street car daily driver, T5, 373's, fairly stock machine. The lift is .540/.550 and I'll use 1.6 rockers.