V8 in place of 216 with 3 speed and stock rear

[Brad Hall]

I know this has been asked 100 times but I couldn't find exactly what I want to know. If I want to take out my 216 and put a v8 in and keep my 3 spd on the column and factory rear what will I need. I do have a 55-57 bell housing but I was wondering if anyone made a conversion for the dog ears since the crossmember is flat. Also if I run headers can I keep my stock 3 speed linkage. I have access to v8s but no 235 currently and my babbet rod motor is done unless I want to put a small fortune to it.