stoveboltgator,
Yes, the 261 can be disguised as well as the 235 can be disguised to look like a 216 or low-pressure 235.
If you have a 58-63 261, the full-flow oil filter is an interesting oddity on a 2-bolt valve-cover engine. Otherwise, any 216/235/261 by-pass oil filter will work on any 216/235/261 by-pass filter block.
Regarding the fan: if you are using a 235/261 with the water pump relocation plate and the older water pump, use the older fan.
The front plate on newer 261/235 engines can be swapped or adapted to work with the older-style front motor mount.
