Hi Mike:
Do you know what kind of power levels you are looking for? Depending on cams, static compression, boost level and such, you might find that 42 lb/hr injectors to be small,.........
Bear in mind that air-cooled Turbo engines rely on the evaporative effects of fuel cooling to help maintain reasonable cylinder head temperatures and "best-power" AFR's are too lean for one of these to survive for long.
DonE asked some good questions that should be considered before making some hard decisions so you do not do this all over again.
Finally, Porsche's finless Turbo cylinders was the result of their efforts to try to maintain more even cylinder and ring temperatures around the circumference of the barrels when the engine was hot. Needless to say, the "experiment" didn't work as planned and most of these engines had leakdown figures that were less than ideal. This resulted in excessive blowby under boost and one noted result was engine oil that became discolored (contaminated) faster than normal.
Porsche followed Ruf's suit and corrected that with the C2 Turbo's P/C's. Thankfully, the replacement 3.3 P/C's are now fully finned for durability and longevity.