Roy from Barracuda Sudios mentioned that he's preparing a several sets of cowlings for Revell's 109 G, that will transform the kit to G-10 (Regensburg) K, etc. He didn't specified all of the sub-variants, but it should be worth a while.
Jets in 48 scale are actually pretty big and in many cases well better executed then their counterparts in 1/32, especially when we're talking about Russkie aeroplanes.