Sounds quite possible.In my Historic racing circles this has been going on for 30 years and is no revalation.Last year at Wakefield park at shared a pit garage with a 1962 Austin Healey Sprite.It had the "A series" Austin engine @ 1380cc.It put out 156hp on 98 octane pump fuel.For any one interested check out the swift tune site in the UK.They sell spicey things such as titanium valves,retainers, collets and even Carbon fibre push rods! They regulary build 130 hp street engines for mini's, sprites and mg's.Please don't throw away your twin cam engines just yet, this is top shelf gear and comes at a price.Regards,Raleigh.............