Hello guys, so I was thinking of building a stroker. I started to look on the forum but i only found M50B20 strokers.
http://mywikimotors.com/m50b20/#Tuning
And this page says that all I need for a 2.5 stroker is the M52B28 crankshaft, connecting rods and M52B25 injectors. Is this true? Do i not need a different ECU, as if i was to convert a non-vanos engine?

Also, if i start to build this, is honing and a set of new rings enough for the added piston movement?
Thank you very much, sorry for being a noob.