Yes, pistons are on the way. If you look around for a stock stroke 340 replacement piston in a 4.100" bore, you will quickly see that only one (DSS Racing) offers one. MAhle Motorsports only offers a 4.07" pistons. JE/SRP offers a nice piston but only up to a 4.08" bore size.
I was extremely fortunate to have a great contact at RWB (Race Winning Brands) who own JE/Wiseco/K1 etc........ that was willing to do me a SRP piston at a SRP price in a 4.100" size without the expense of a full custom route. << This was really the cornerstone of this whole project. J.Rob