This suggestion is a general vote for these two rotary engines to be included in the next Forza Horizon.
The 20B was an option in the Eunos Cosmo JC- A three rotor, turbocharged wankel rotary, while the 26B was a racing engine employed in Mazda’s racing outfits. However, non-factory teams have created their own 3-rotor and 4-rotor engines in addition to the Mazda-built ones.
This post is a suggestion to add these conventional engines as Engine Swaps, as opposed to the current 2.6L Racing engine. With these options, players would have the opportunity to decided how much power they want out of a 3-rotor or 4-rotor, instead of being forced to use the 1.3L 13B or the 2.6L R26B. The current 4-rotor option also doesn’t allow for turbochargers to be fitted, and is generally too powerful for lower B-class or A-class builds.