Installing a TKO Manual Transmission into a 1963 era Impala
Please see the page that details the ‘66-’67 GM A-body. The details on that page are applicable.
Installing a TKO into a 1966-67 GM A-Body
The 2 piece driveshaft is not a problem. You’ll need to shorten the first driveshaft and install the Ford slip yoke just like all of the other GM conversions.