My friend Ray has custom made gear sets for his Corvair engines & he told me it is not that pricey.
If you just have a couple made, it is not really too cheap.
But even then, still cheaper than buying from Brazil or Argentina.
I am not really in to selling parts, but I will look in to this further.
IIRC, my friend had told me the gear set could be made for about $150.
I would gladly spend $200 for an adjustable gear set, seems worth it to me anyways.
The cool factor is there also.
Jesel adjustable belt drive timing sets are really expensive, & those are for popular SBC's
http://www.ebay.com/itm/Jesel-Solid-Uppe...aba&vxp=mtrhttp://www.ebay.com/itm/Jesel-KBD-34500-...37b&vxp=mtrhttp://www.jesel.com/valvetrain/index.php/belt-drives?gclid=CPGJ6KrgysECFYVlfgodZY0A0wAnd we don't have belts that stretch out.