THe 785 piston WAS really cool................ ITS not any more unless you can find NEW OLD STOCK from somwhere other than Wiseco. They changed castings, no longer cut the Lightening windows and there is no Coating anymore. Use a Honda piston, There less likely to F''' with those.
BE careful on a Piston that unshrouds in the intake when they wear some is whaen you will have a problem, keep on it maintenance wise with good rings.