hi folks, new to here and generally looking a bit of info on a engine i have sitting in my garage. ok here it goes, its a lotus twincam engine with 40 webers i think not 100% sure. the engine belonged to my father who go it fully rebuilt and fitted it to a mini then the project came to a stan still and engine was removed and mini scrapped, the engine is a proper stmped l block 701m-6015. just generalla looking on a valuation on this as there is a man tortureing me to sell it and im afraid hes offering too little for it as i remember my father telling me its a very rare engine. do any of yous know much about these?