I drive a '95 accord EX-V6.

I am wondering the different possibilities with engine swaps for this model and year...

Things I know already, but have additional questions:

H22A is a popular swap, but in the 4-cyl cars. How about the V-6 models?

V-6 models have a longer nose, or so I've heard. I have never measured.

The reasons for my questions about a swap is... my engine has loud knocking coming for the valve covers. I do not have much experience with engines and engine repair, but the dealership said that it is possibly my valves; not compressing or something to that effect. ??? I have priced ordering the same engine... code C27A4, but the prices I am getting are not much cheaper than a H22, minus the install fees.

Any direction, further questions, or ideas would be greatly appreciated.