The 400 has a 10mm heel lift (20mm/10mm) and is 7.5 oz. It launches in July and is part of the new Bolt collection. There is also a FAAS 200 that is in the Bolt collection that is 6 oz and has a 16mm/7mm heel to toe.
The 250 and 300 have the exact same tooling with different uppers....but the Roadracer does not. The Roadracer is on puma's old racing last that is much narrower than FAAS. The 300 and 250 are much broader in the midfoot than the Roadracer.