340 to 360 Harmonic Balancer Swap?

"yepp the flex plate will work. are you puttin a 360 in place of a 318? there is a aftermarket flex plate to do that so you don't need a new convertor"

the 360 is replacing the 340 which i pulled to work on. So I hear you saying if I buy the aftermarket balanced flex plate, I can keep the torque converter?

If i were to look for the flew plate at summit what would i ask for? A "balanced flexplate for a 360"?