That might be ok and as a complete kit ,cam,lifters.valve springs ,retainers ,locks etc . Will make an improvement for sure as long as the rest of the engine is ok . You can fit the valve springs on with heads on if someone knows what they are doing ,other wise heads off .. Don't think the std torque convertor will like it . After doing the carby ,intake manifold ,exhaust,extractors it gets messy . It's hard to know where to stop before you do a full rebuild .