RE: EU-1A
YS has no current 61 production - side or rear. The latter is supposed to change soon...
Jett does have a RE 90 as well as a 100 or 120 I believe. Better suited to the EU.
Novarossi and MVVS are the only current production RE 61's that I'm aware of. Although not current production, it is also possible to obtain new OPS gold head RE engines - 1980's production stock.
David