Yeah you can drill the mounting plate, saves some work that can be a P.I.T.A.
Short waterpump or adaptor for the 216 pump if you want more original look.
Manifolds are biger diameter on 235.
Install a at least a bypass filter, better a Frantz Filter. Modern oils kepp the slush in suspension and deliver it to your bearings.
3-speed will bolt right in.
Make sure you use the right pully/belt combination. 216 and 235 are different here.
Also you might have to modify the generator arm a bit.
Have fun!
