The profile difference in 1/72 scale is negligible all the way to the Su-27 radome break. The difference in fins and tail stinger was well publicized. So to answer the OP on how to make a Su-35 (T-10M) or Su-37, refer to a thread in Britmodeller where the builder crosskits a Su-33 with a Su-27SM,
According to Cooper, the Su-30, while powerful on paper, lacks performance and combat capability compared with Rafale jets or eve MiG-29 fighters. He also points out that the Sukhoi Su-30 jets had failed to make a mark during the Kargil war in 1999 and Balakot Airstrikes in 2019 and instead India relied on the old Dassault Mirage-2000s.
GkRM. xxjhn1b9go.pages.dev/406xxjhn1b9go.pages.dev/428xxjhn1b9go.pages.dev/578xxjhn1b9go.pages.dev/534xxjhn1b9go.pages.dev/356xxjhn1b9go.pages.dev/245xxjhn1b9go.pages.dev/429xxjhn1b9go.pages.dev/357
difference between su 30 and su 35