ABC (not cheap ABN) PC set for Enya 19-V&VI is now available from ENYA.
Yes, they are old but very good stunt engines.
May run smoother, lesser vib and more torqueful thus powerful with the new PC.

Aki

http://www.enya-engine.com/store156C_1/index.php?main_page=product_info&cPath=3_25_44&products_id=612

Whatever their reason, that's a very good price because that equates (in round figures) to Aus$60 or US$40 and while you're ordering one why not go the extra $8 (Aus) or $5 (US) for a new conrod. That should give a virtually new engine for your old worn out clunker or a cheapy from ebay, not that Enyas ever wear out anyway .

Might take some machine work to produce a Venya .19.

The bores are sort of close, but the strokes would seem to differ by about .050", which means you would likely have to match up the ports again, etc.

http://sceptreflight.com/Model%20Engine%20Tests/Enya%2019-V%20PB.html

I don't have an Enya .19, but the old .15-III I have is a shaker, at least on a flimsy profile. That one might have benefitted from an ABC setup, too.

Dave