1g/2g piston rod combo?

[green hornet]

ok i searched and found nothing!

1. whats the advantage of doing this.
2. which shop will match the too for a decent price.
3. has eny one here done this, and what have they noticed

the reason i ask is, i have to disable almost all of my motor to replace all the seals and what not, befor i do my swap in my 2g, and my 2g still has a 7bolt in it, so if the pistons are still good when i pull it on monday, i was thinking of doing the swap! MAYBE!