First question / Early A

Hi together,
it is time to build an engine for the Valiant.
For the first time I start to overhaul a 273.

Here are some pics.









The engine is really dirty. Tomorrow I will clean the motor by a high pressure chastener.
The cylinder are 0.003" wasched out. I want to install new rings.

On the last pic you can see two crankshafts. The left is the 273 forged crank which I want to install in a hot 318.
The right one is an 318 crankshaft from 1978. This one war driven with heavy rods. Can I install the 318 cast crankshaft in the 273 engine and use the light 273 rods?