Does anyone have a source or POC for getting blueprint data for this high mpg 8-valve SOHC engine and components? Many of the parts are unavailable while manufacturers/machinists could build / quote from a good oem / aftermarket design. From what I've read, bearings are unique / custom, necessary, and discontinued. But certainly the knowledge of how they were designed / built / fitted is archived somewhere by someone.

I would like to avoid reverse engineering with 3-D scanners / machinists tools for dimensions and taking a guess on material / process / properties. So anyone able to offer knowledge and insight, please chime in.

Please leave any helpful info for a modern (2021) rebuild of the D15B6 and what is known / needed to get her done in the USA!