Some additions related to the Saab 105 series.
Sk 60F - planned re-engined Sk 60 (Larzac 04C6, JT15D-4 or D-5, J85-17B, Garrett F109, Williams-Rolls FJ44 statically trialled on grounded Sk 60 60134 which became defacto Sk 60F prototype (later converted as Saab 2060 mock-up for JPATS proposal)
Sk 60M - planned target-tug Sk 60 conversion, mid-1990s
"Sk 60W" - unofficial designation for re-engined Sk 60 with FJ44 during late 1990s
105H - proposed improved 105G, offered to Switzerland instead of 105XH in October 1971 (H = Helvetia/Switzerland ?)
105PAK-0 - proposed export version for Pakistan, identical to 105OE, 1971, 64 ordered but cancelled due to 1971 War
105XB - proposed export version for Belgium, 1970-73
110 - upgraded 105G or 105S, 7,000kg MTOW, 2x ventral cannon & wingtip AAMs, offered to RAAF 1977 (note this re-used the 110 designation previously used for a three-engine business jet)
Plus two 106 business jet variants:
106A - with Turbomeca Aubisque/Volvo RM9
106GE - with General Electric J85
Source: Saab 105 database, Aeroplane Monthly, Dec 2025, Issue 632, by Jan Forsgren.