What are you using to install harmonic balancer/torsional damper?

So I'm in the Snap On truck before I pulled my motor getting a few tools and I bought this nice harmonic balancer kit that looked like it fit every application under the sun. Then I pulled the LT5 yesterday and no problem taking off the damper only to find the bolt threads don't match anything in the kit and bigger too.

So what is out there to reinstall the balancer/damper? I am surely not going to do like I remember friends doing in the old days with a 2 X 4 and a BA hammer.

Thanks!