Well, here it is: the new Wiseco stroker/big bore 988 kit! Notice that it has the same list price as the standard 904 kit, too. Also notice that Wiseco is calling it a 1/4" stroker - good ol' 'Mer'can numbers.

See the piston kit here: http://www.wiseco.com/PDFs/Catalogs/CB06/EuropeanCycleATV.pdf

Of course, you'll have to send off your crank to Falicon to have it welded and reground at an additional cost.

From what I can tell, that crank work can be found here: http://www.faliconcranks.com/cw-list.htm#plain and it looks like part #600-402 @ $585.00 (plus shipping both ways).