Couple of reasons that
export Hawks, fixed gear
and retract gear, tended to have
Cyclones instead of
Twin-Wasps; one, the US Government had restrictions on who could buy the Pratt engine and what versions
could be sold, and two, the
Cyclone was a Curtiss-Wright product, so naturally they sold a
package when
they could.
The French and Norwegians both ended up purchasing variants with first P&W (A-1, A-2, A-3 and A-6 respectively) and
then Wright (A-4 and A-8 respectively) engines.
The Thai Madsen cannon equipped aircraft were primarily used for ground attack, with evidently satisfactory results.
The 23mm Madsen cannon was also tested by the USAAC on a P-36, redesignated XP-36F, for the ground attack role.
Curtiss Hawk 75 Beauchamp and Cuny;
Curtiss Fighter Aircraft, Dean and Hagedorn.
The old Hobbycraft (also boxed by Academy) P-36/H-75 series makes it fairly easy to model a P&W engined, fixed-gear
Model 75 by combining boxings. Note that neither cowling, P&W nor Wright is all that accurate, but they look OK built up.
The Hawk 75M/N/O kit comes with three variations of wheel pants/spats.