We've been involved with quite a few GM Square Body (1973-1987) pickup truck projects that received a Duramax swap. Here's a recent contact with John Murray, who is using our mounts in his projects.

The mounts are great we just did a 85 K20 with a LBZ. I am now building a K30 with a LB7 - John Murray


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Also, we have a article here in The Diesel Page about one of the very first Squarebody trucks to get a Duramax.


1987 Chevy C30
Duramax Diesel Conversion

Bringing new life to an older truck is more than just a way to save a ton of money. A surprising number of members keep the same vehicle for decades, and want to do all they can to keep it on the road. Converting the drivetrain to Duramax/Allison power has become a popular upgrade, which increases the vehicle's capability and value. Member Kean Clark was working his way through a 1987 Chevy C30 restoration and Duramax swap project, and we wanted to show you his project.
https://www.thedieselpage.com/featur...Conversion.htm

TDP Duramax swap mounts: https://www.thedieselpage.com/conversionmounts.htm