mylittlelupo

So I've spent a long time now reading into the 1.8t conversion, (and yes I have used the search function!) and there doesn't seem to be a definitive "do this, this and this guide" and every conversion I've found so far is different. I should also probably add in at this stage that I don't plan on doing the actual swap myself (due to a severe lack of somewhere to do it and confidence rather than a lack of knowledge) however I do want to know as much about the different possible engine/box combinations ect. The target is to have a strong reliable motor that's just got a little bit more oomph when I fancy it. In other words I'm not doing this to be able to go yea I've got a 400BHP tri-turbo NOS monster thing. I'm aiming to be running the 180 brake mark. This is something that is pushing me away from the BAM as iirc they are 225BHP as standard? I'm thinking of either going with the AGU, or the AUQ, preferably the AUQ for the VVT and drive by wire, and was just wondering if anyone could give me any advice either way on which is a better engine, or if I'm completely off the mark and should be looking at a different lump? Also gearboxes, I'm sure I've read in a build thread that the 6 speed box wont fit into the lupo, whereas the 5 speed does, (is this the o2A box?) The company I'm planning on using say on conversions they normally run a Revo stage 2 with immob delete, which brings that 150-180 brake nearer 220. The only mods engine wise that would be going on is a custom front mount intercooler and a custom ehaust, and was wondering if there are any essential bits that may need changing/upgrading when upping the power like this? Or should the stock internals cope fine with that? Sorry for the long post, I get a bit to sucked into all of this. Thanks in advanced for any help/advice