[hemi6]

I got Rogue Engineering (the softer type, not the race) and have been more than satisfied with them, no special tools needed and were very easy to install.

Amen. And don't waste your time trying to remove the old stock-style without a proper tool unless you like getting pissed-off and frustrated.
Rogue units do not use the copper-based lube, they use this:
https://www.amazon.com/Super-Lube-S...rds=superlube&qid=1553172002&s=gateway&sr=8-1

Mike