But what important is that, functionally, there was virtually no difference between the base model 190F-8, and all of its various /R and /U subvariants. Same engine used, with exception of the F-8/U3, which received the uprated 801S engine, IIRC. Same airframe, same propeller, same exhaust, same guns (mostly). Biggest difference was the bomb racks and internal equipment such as radios and the like.
There's literally not a single solitary thing standing in the way of giving the 190F-8 more of its historical ordnance options (3 250kg bombs included), save for HTC's level of interest.
Oh, and I can't recall, did we ever settle the 2 250kg + 1 500kg bomb matter? Best I can remember, it was entirely possible to do without any modification to the U1 subvariant, but we lacked definitive photographic evidence.