need help locating type 21 radar in 700th scale

Flyhawk and LionRoar both have a bunch of equipment specific PE sets - best bet is to look at LuckyModel, best prices and PE sets usually shipped free.  Lion Roar has specific radar sets, as an example. Also dont forget to browse the two old reliables (and high quality) Toms Modelworks and White Ensign Models. Finally, veteran Models and Fine Molds have been releasing plastic AM replacements for deck equipment, which are just gorgeous in their detail. Again, your best bet is LuckYmodel for price and free shipping.

hope this helps!

You can also check out Voyager as they also put out some very P/E sets for generic Radars. But I would put my Money on Lion Roar. They have a lot of specific area Sets for Different Navies and have a large range of Japanese Subjects...Cheers Mark