what other d series motor are easily swaped into the si

 

none that are worth while... if you want to stick with the single stick build a mini-me otherwise go B or K

 

d16z6 or d16y8. easy because they don't require you to change shift linkages, engine mounts, axles, etc. mini-me is also an option, but high mileage bottom ends tend to go out after you swap on a newer cylinder head.

 

Not sure if its the same in the CRX but im doing a ZC dohc in my hatchback in the future. heard it isnt that expensive to do and pretty ez

 

just as easy as the d16z6 or the d16y8.
a word of advise tho.
you can probably find an d16z6/y8 thats in better condition than a dohc zc for cheaper, produce the same horsepower, and not have to worry about the compexity of a dohc engine.
dohc zc's are gettine old.
i say stick with a single cam vtec since its the same horsepower than a dohc zc...

 

Check the FAQ, that is going to be the best way for YOU to research what motor YOU want to put in YOUR car.