Subs for 3sk45 & 3sk59? for Marantz FM front end

[birdyman]

I am working on FM front end of Marantz 2265. I need 3sk45 & 3sk59 ( both dual gate n channel mosfets) Can any one sugest where to get them or info on possible substitutions?
Thanks in advance

 

[jackinnj]

I think some ham radio receivers of that frequency used the 40673.