Just buy a cheap Amazon or Ebay one. An impact isn't needed to install one.
You should own an impact though, they can be handy. I'd spend the money on that before a TAV. I have a Dewalt one and love it.
I have this for on:
LEXIVON 3/4-Inch Drive Click Torque Wrench 30~300 Ft-Lb / 40.7~406.8 Nm (LX-185) https://smile.amazon.com/dp/B09F3NP3BY/ref=cm_sw_r_apan_i_B95RDK144QRJ1SJW8HCS?_encoding=UTF8&psc=1
This for off:
DEWALT 20V MAX XR Impact Wrench Kit, Brushless, High Torque, Hog Ring Anvil, 1/2-Inch, Tool Only (DCF899HB) , Yellow https://smile.amazon.com/dp/B00WTQW7JA/ref=cm_sw_r_apan_i_F4VWX8EQ9KK4K5X1RKC6