Compression reduced pistons

[Nicholas89]

Okay I’m new here I’ve had my 1989 f-250 with a 7.3 and a 5-speed I currently have the engine out for a overhaul and what to lower the compression slightly with Mahle pistons but I don’t know the part number and I can’t seem to find it anyone know what it would be much appreciated along with any other tips on making power

Thanks, Nicholas.