Hello I plan on putting a better gear ratio in my 3.1 V6 firebird I currently have 273s want 373s. Now the gear in the transmission I change to make the speedometer correct are the V6 and V8 ones the same or different cause I plan on swapping my motor eventually and getting a V8 700r4 and just take the gear out of my V6 700r4 if that would work. Any help would be appreciated thanks. Also would posi 373s fit in my housing