318 LA 4inch stroker pistons

Here is a start. You'll end up with approx 390-ish cid. You can probably data mine the pistons from the kits available.

Small Block 318

Best Mopar 318 Stroker Kit at CNC Motorsports

https://www.hughesengines.com/Index...hbGwgQmxvY2sgIkxBIg==&level1=U3Ryb2tlciBLaXRz