Incorrect information, please read your own referance material first the block that you quote is a race preped block(Titan built street/race specification engine: forged pistons, billet connecting rods, fully assembled, balanced, all new gaskets, seals, water pump, oil pump) the lowerend of that motor has been altered hense it is not a stock block. To my knowledge mike carlons supra is the highest hp stock block supra out there
http://www.to4r.com/member.php?show=mike.carlin he is pushing a very nice 980 hp, but 980rwhp is not 1016rwhp.
I realize this is very obscure but i met a fellow at the fl Gainsville (Super Chevy Show if i remember correctly the car was a red zr-1 dont remember the year) raceway who had a stock block twin turbo lt5 who was pushing 1100 hp so they are definantly out there. Also realize that the lt5 was designed very strong from the begining, the whole lower end of the motor has a cage holding it together, instead of just main bearing caps.