318 build up suggestions

I've built a couple of 318 engines. IMO, the K1 rods are not needed. The OE rods are probably to expensive to rebuild and resize, so, a more inexpensive rod from, like, Eagle would do just great.

Also, a Hypuer-U piston is just fine for high performance useage. Pay attention to ring gap. I think the zero deck or close to it KB167 slugs would be a great fit.

You could also go one step up in cam no sweat. Being you have a 4spd. and 3.55's. I have used a Crane cam with very similar specs and it is a great driver cam that can deliver a respectable power level even from un ported dead smog heads and stock small valves.

Choose the cam on it's power band/operating RPM.