When it comes to installing uprev (feel free to correct me if I am wrong) you download a program to your laptop & plug a cable in from the laptop to the OBDII port & click on an “upload” button in the program.
Actually Morgan tuned a 370z with a stillen supercharger kit, upgraded impeller, upgraded pulley & the usual bolt-ons using uprev. I am sure he could handle a M35 with an intake, plenum spacer & exhaust. He also has a real good understanding of what both N/A & F/I cars like when it comes to adjusting cam timing which is where you pick up alot of the power from tuning. I must disagree when you say bringing the car to Morgan to tune is “stupid”
In my opinion the oem suspension is of higher quality than that of BC… I do agree the car may not look as “cool” at stock ride height but…