Ok, I have already used an alternative m10 to build a performance 02 using the same Tii chassis. I’ve decided to pull the matching motor out of storage and give it a naturally aspirated performance upgrade. My first choice was to do what everyone said here, to keep everything original but here in Australia, there’s no one who know about these cars. They claim to know but I experienced differently when building my e28. I found a shop in Holland to upgrade and rebuild the pump and he’s asking over $7k USD. Just doesn’t make sense. I’d prefer instead of just rebuilding the pump, also have it upgraded for better performance but as discussed, no resources here. That’s is why I’m looking into EFI but I’d consider the oem pump if I find a shop that could do the performance upgrade (for the pump) at a reasonable cost.