It's "neck of the woods" chip.
I would go to stage 1 first, to see if you like it, and it's a lot cheaper into the bargain.
I'm not being funny but I can't remember tha last time someone looked at my car and said or knew you have a 500 cooler, as said done in black like Airtec now do, you're not going to stand out a mile anyway.
205 blocks are wobbly but some with high mileage at way over 400bhp without incident, a lot of the probs occurr when pillocks rebore without a deck plate, my place won't do even a std pinto sierra engine without using one.
Most people have turned out shit at some time, including the names above I'm sure, it's how they deal with it that is more important.
tabetha