how strong are our engines cranks?????

i know that the svt crank is forged which means that for the most part its a durable unit. however under high power situatuations how strong is it??

also does the stock 2.5 use the same crank as the svt, also with the stroke being the same, what about the 3.0's with all the talk about titanium rods, sho bearings, and custom pistons. will the crank last in the long term

also has anyone thought of cryogenically (spelling) treating our existing componets, from what i understand it reorganises the componets structure and makes it stronger

what im looking to do is make a bad @$$ 3.0 with an 7500 rpm redline 8000 fuel cutoff but since i will only be able to afford this only once (with lots of penny pinching) i want it to be dead reliable


-Y2K SVT- BORN 1/03/2000
NOW IF ONLY HAD MONEY TO MOD IT