Found the calculator to do what you mentioned. Once I get it on the street I may have to do some gear changes. It’ll need some down force or it will be floaty. Spicer provides a calculator.Other than you sharing a 373 rear gear there is nothing equal in comparison to a stock Monte SS that would at best have a 305 SBC with a 200R4 with stock height tires, the Monte SS would probably be more aerodynamic but you have a 350 and a 5 speed.
The best bet is using an online MPH calculator and punch in your specs to see where you are at if that is the info you are looking for.