CDegner - Who you callin' "Old Monkey?" :-laf
"Stock" is a relative term. I am assuming that the pump never comes off, or the governor housing separated. The POD's make good power, but if you want big power with a stock pump, larger injectors will be necessary.
The only real advantage I see using compound turbos over a single is EGT reduction on a first gen. I did gain some HP by building a compound setup, but EGT control was the greatest benefit. Not including the stock turbo, I have had six different singles on my rig. The HX40 and DD Jammer were the best of the two for around 400hp. The Jammer being the faster spooling charger. Both allowed for about the same EGT's. Compared to the compounds the 40 spools about the same, but makes more EGT. I could burry the pyrometer with the 40, and only make about 1225* with the compounds. For most higher HP applications I think that a 40 or Jammer would be the best choice. There are several smaller benefits to the compounds besides the EGT reduction over a single, but it's really a lot of money, and/or time, than really necessary for most to spend. Last week our shop made over 700hp with just a single H2E on a p-pump rig. 800hp is do-able. So it really depends on what you do with the rig, how much time/money you want to spend, and what your goals are. A performance cam can also be used to reduce EGT's instead of compounds. The cost of a cam installed is much cheaper than the cost of a set of compound turbos installed. There are some setups that work better than others, but there is no one "best" setup that will work for everyone.
Mike