hmm, to add to the confusion, building the full RB26dett would cost me less than building the RB30/26. a good friend has the bottem end, i already have everything else ( except forged pistons and gaskets ), i already have the RB30 but still need oil pump, water pump, pistons, gaskets. the 30 will cost more due to ceramic coating, cam belt setup, tuning and other eletrical bits. the RB26 will need a few bits replaced but will be like a simple rebuild, not much tuning needed. either way ill be putting it together with darren from lewis engines so porting, preping rods crank, shot pinging, boaring, honing etc will only take up our time not money.