Furious Reason is a set of free wargames rules that combines Fire and Fury with Age of Reason.
For many years, Wargames Research Group rules were the standard in miniature wargaming. The Wargames Rules: 1685 – 1845 cover the entire horse and musket period, and include useful army lists for Malburian and Seven-Years-War armies as well as the campaigns in India which preceded the Napoleonic Wars. I actually own a print copy of these.
Warflag has some modifications for the commercial Age of Reason rules to allow you tu use them to fight battles in the Age of Marlborough.
Seven Years Warmaster is an adaptation of Games Workshop’s Warmaster rules for the Seven Years War.
David Manley has written campaign rules for the 1782-1783 naval campaign between the French and British off the coast of India. Manley writes:
Between February 1782 and June 1783 the fleets of French captain Pierre Andre de Suffren de St. Tropez and British Vice-Admiral Sir Edward Hughes fought a series of naval actions along the Indian Coromandel coast in what has become one of the most popular campaign settings for wargamers of the age of sail. Five actions, all largely inconclusive and fought between fleets that were relatively equal in numbers, were fought on the Coromandel Coast, at Sadras, Providien, Cuddalore, Negapatam and Trincomalee.