Personally, I would not consider operating a Turbo 'Toga/Lance without
this modification.

Well it seems that after reading all the articles mentioned on turbos and
your comments, my decision has come down to one aircraft with and one
without this intercooler mod.

I'm assuming this mod can be performed aftermarket. Do you happen to know
the cost of performing the mod?

The asking price difference right now between the two is about 20k. There
are some other factors going into that cost, but I need to be able to
justify the extra $$$.