but the A12 conrods are bulletproof - they've been abused for years in clubman/sports1300 racing for years and have earnt a legendary reputation for strength and reliability

My advice is to contact some of the guys who've run sports1300 (check outSupersports Racecar club of Australia) and get put onto an engine builder who knows how to make A12's go.

what am I talking about? Just talk to Erol at http://www.datrats.com.au/

No point re-inventing the wheel, unless you want to spend more money for a lesser result