I'm the one that pointed you to gofast.com.

It is one of the best deals I've found for a rotating assembly after several months of searching.

There is a mis-print in the description for that kit however. The KB-135 pistons are D-Cup with 18cc dish, not flat tops as indicated, and will yield about a 9.6:1 Static CR with a .040 quench using 64cc Vortec heads.

I've talked to gofast and the rods are already clearanced, so if you get the balanced assembly it is ready to drop in out of the box. You can also get press pin rods as an option if you want.

1pc rear main seal is less leak prone than the older 2pc setup. Use a one piece rubber pan gasket as well.

Assembly is plenty strong for a 6000rpm or less engine.