WRT (With Respect To)?
"> I have in my shop a totally rebuilt 261 and was told it came out of a
> 53-54 Corvette."
A 261 was never put in a Corvette as standard equipment or as a factory option.
It could be put in a 53-55 Corvette if the crankshaft end was suitable (or made suitable) for use with a Powerglide transmission and the water pump is mounted in the correct location (as in 53-55st 261).
