maybe compromise stick the turbos under the floor pan near your feet?
i lashed up a turbo set up in a few hours with stuff i had lying around and it worked pretty good
also had a blown turbo on another so set about fiting one homebrew as the proper unit was $$$
i figured the diesel engine was 2.0 and the petrol turb was 1.8 so allowing for cc and rpm it should work??
well it did but needed to ,,come in,, about 1000-15000 rpm lower it was fine on the highway but in town was a pig
yes turbos like lower c/r but not 100% needed some n/a versions of the same engine run the same c/r my 1st conmversion was n/a and i just stuck it on and it worked just dont go too big or it will be all top end
for a pump for the oil find a nissan 200sx rear end and rob the pump
you may find 1 turbo is enough for what your looking for
good luck