help with 410

hi my name is justin. i have recently purchased a 67 fairlane gt. it currently has a 289 it but i want to put a 410 in it. could someone shed some light as to where i might be able to pick one of these up at. if not, i know you can change a 390 into one by changing the 3.78 stroke to a 3.98 stroke and balancing it with a fly wheel and harmonic balancer of the same. what i don't know is, what pistons were used in these engines. i have heard that they were the same pistons used in the 360 truck engines because they were dished to get a manageable cr due to the extended stroke. where can i find these pistons. if someone could get me a link or something to them i would greatly appreciate it.