This is the email that came with them and by speedflex im guessing he meant speedvision.... Dear andysdr, sorry for the late reply. these type were orignally built by speedflex but he had lots of shit about his cams so they are now being done by crower a good usa builder. i believe they copied his 265 degree cams when they made these but did accurate timing information and specs and they actually turned out to be 262 degree and 9mm over the 8.5mm speedflex used to quote. i'm an engine builder my self and double checked these marks and they were correct, i also had them rockwell hardness tested and came back to acceptable levels. these were going to be fitted into my own glanza but i'm an mr2 specalist by trade and i've just bought a 600bhp mr2 i built for a customer so my glanza is being put as my daily drive now over my toy and i'm detuning it from the 300bhp i wanted to a more sensible 180-200bhp daily so cams aren't needed oh if your interested i also have a remanufactured OSgiken super single clutch with 2 replace friction disks, and an extremely rare Blitz K2-220r turbocharger kit, just rebuilt and ceramic coated system (this was confirmed by blitz to be a prototype with only 50 built) can't get rarer than that. ever got the instruction manual from when it was made Tim TB Developments