New life for an old 340 (stock stroke)
I used the XE294H. Pistons were the TRW/factory type forged, IIRC they were around .010 above deck. It was really snappy - shredding the Hoosier QTPs - but a lot of that had to do with the 8" custom convertor. It was a flash stall of 4K, but even below the stall it was pulling hard. IMO it needed a bit more carb (had a 4150 750cfm) and a lot more tuning. But it would pull hard past 6800 in 3rd. The owner was less than gifted in regard to tuning and setup and the rest of the car was a mess so I'm sure there was more in the package.