QA1 Gerst Suspension 1967-76 Mopar A-Body Front Suspension Kit 52343-S40 made by Eastwood ?

So just to be clear-

That kit is made by QA1. QA1 bought Gerst and improved some of the substandard components that lead to failures of the Gerst units. It is not made by Eastwood at all, they’re just a vendor.

That kit does not replace any of the factory frame rails. It replaces only the stock K frame, and bolts in place just like the factory K frame does.

If you need to replace frame rails that’s a completely separate operation. You’ll still have to source the frame rails separately and replace them before you can use that kit.

Also, you posted this in the “early A” section. Your ‘68 is not an “early A”.