stroking an m20b23

[The Humjet]

I was wandering if this combo could work for an m20b23:
-m50 crank
-stock rods
-m20b25 pistons (stock block gets bored 84mm)

my aim is to have a low compression ratio so i can turbo this engine, and I know I could just simply buy an eta block and lower the compression ratio but here in Australia they're not easy to come by.

If you think this is a completely stupid idea, do tell some other options I could go.

[digger]

Isn't the 323i crank bigger than the M50? therefore you would be destroking

[The Humjet]

Yer your actualy right my bad, how bout the pistons could bore it out the block and put 325i pistons would that increase or decrease the compression ratio