The 327 engines had several types of balancers ranging from small ones like you would see on a 283 to large ones for the high performance engines. Size really makes no difference in your application since it is basically a stock engine. Check with you local NAPA or other local parts store and see what a replacement costs compared to Summit. I used the street version of the FluidApr for my 383, but you could easily get by with a stock replacement.