Hi
Im gonna replace my drive coupler while the motor is out, should i be using a steel hub ( like avail at CP Perf) or a merc aluminum hub? The CP is an HP unit and is much cheaper, but ive read mixed reviews about steel vs alum. My motor will be around 500-550hp eventually, so im planning ahead.
Thnx

First there is 2 different styles of couplers. Dick or non dick version. I have a good merc one here with the dick for 200 like new.

Use a steel coupler. You can use the one with a snout or without. All of the long snout couplers are steel. They used them on 575SCI's and diesel packages.