son, you cant even spell warranty. i know i don't type with proper punctuation or even capital letters but that is because i am lazy.
here is the link for the engine price.
http://is.sewellparts.com/oem-catalog/1101115207-EngineAndFuel-ISF-2009.html
and what part of not mod-friendly didn't you comprehend? since you do so much reading and you have so much knowledge of low compression forged pistons, you must know that you need to be able to TUNE AN ECU to adjust engine parameters in order to make power from a modification like that. that is something that HAS NOT BEEN DONE ON AN ISF. the ecu has not been cracked. and all piggyback systems have been hack jobs or have failed miserably. yes 1000whp would probably be possible from a 5.0L v8. BUT. BUT BUT BUT BUT. who is going to make all the supporting parts for this kind of power? the ISF is so low volume that it is hard to do. i recently was in my dealers show room and the ISF they had on the floor had a VIN number only 1800 higher than mine. i have a 2009. that's 2 and a half years since i got it, and there are probably less than 2500 newer ones than mine. so, your dreams cannot be realized. if you want it done, find a pile of money and get it done. but you dont even have one so that is unlikely.
do some more reading before you open your mouth in such a way. seriously i think you are some 16 year old kid the way you talk.