You asked a blanket general question. We all answered the question in the way it was asked. Looks like the concensus of us are not using any more specifics other than what the original question asked.
WE are in the dark about the whole thing. You did not ask about exhanging any certain rod for titanium. That was not your question.
I will tell you this though if by Titanium Rods you mean the ones on ebay, I would be very wary. Titanium like many other metals comes in a variety of alloys and of qualities. Titanium Rods are not the best rods for several different uses, but are the best for other uses. The prices of Titanium is sky rocketing and you are in for many thousands of dollars to buy good high quality Titanium Rods now.
Rod bolts are another often misunderstood part. Buying the biggest and baddest rod bolts does not assure you against any failure of rod bolts. Rod bolts like everything else in the engine needs to be matched with what that engine's purpose is.
This will calll for extensive rebalancing with more weight getting cut from the crank.
The end result could be great for you, or could be a mess, all depending on what this engine is doing.
I would not want Titanium Rods in my nitrous engines and definetly not a lite crank. On the other hand if it were a Sprint Car or even a late model, with mostly constant higheeer rpm I would for certain prefer the Ti.
Ed