The 64 Monte was the launch of the 289 - developed by Ron Holman of Holman & Moody. 305 bhp

http://www.westcoastfalcons.com/scff/histriv/rally6.htm


The Sunbeam Tigers suffered from very tight exhaust manifolds - to fit in - and the highest HP standard was just under 200 bhp. Since the Alpine chassis was derived from the Husky van any more would have been even less well handling. One of the hottest US/UK hybrids of the time was the TVR Tuscan V8. Wikipedia wrongly states the top speed as 155 but in fact it was 165 - the snag being that considerable front end lift made it more like an aeroplane than a car at much over 130, to the considerable detriment of directional stability. Gerry Marshall raced one with considerable success.