In most cases you would simply use standard undersize bearings, however this varies from engine type to engine type.
An example of this was the old side valve Mercury engines. [1939 to '48] They used a larger crankpin size than the very similar 'Ford' engine, so it was a simple matter to source a set of Ford rods & offset grind the Merc crank. The Ford bearings were for a 1/8" smaller journal so the crank was offset ground to the standard Ford journal diameter & a 1/8" [just over 3mm] stroker job was achieved without special parts. If the engine was bored 1/8" you got what became known as an "Edelbrock standard" bore & stroke.

Naturally, whenever different components of different specs & mass [weight] are used, then a comprehensive balance job is highly recomended.

There are many ways to skin a cat with stroker jobs & doing your homework beforehand can save a lot of grief.
If you use an A14 crank in a low deck A12, A12A or short stroke A13 block with the A12A or A13 rods, then the use of the lower crown A15 piston will go a long way towards making it all work. The A15 piston will still need machining, but only a little.

Offset grinding an A15 crank by .5mm means that 1mm oversize bearings [for an undersize journal] are needed & you would need to machine .5mm from the top of the piston to restore deck height.
This would give a 1mm stroke increase & with a standard bore the capacity would increase from 1488cc to 1506cc.
It would be wise to check the clearance of the rotating parts to the block as it gets a little squeezy in there, even in a stock A15.

If you used the maximum standard overbore of 77.5mm, the capacity would become 1566cc.

wat would be the advantage of this, some sort of stroking???
surelywould make the whole engine out of balance ???