Great looking car and project - since you're switching over to the W123 motor, I've attached a link to our site's diy tech articles for that platform; I hope you find them helpful in troubleshooting and resolving any issues. Keep the photos coming of the build!

Mercedes-Benz W123 300TD (1977 - 1985) Technical Article Directory | DIY Maintenance and Repair Projects for MBZ 230, 240D, 280 CE, 300D, 300TD | Pelican Parts


-Dmitry