Need to find year of motor KA24DE

[SolTNtuz]

Hi
I have a few more finishing touches and car will be complete.
I purchased a fresh rebuilt KA24DE on Kijiji and put it in my 1989 240sx, added turbo and intercooler now my pulleys do not line up with water pump and power steering ( motor did not come with pulleys ( except crank ) and used the old KA24E ones ).
I do not know the year of the block and no one is able to help so far.
The serial number stamped on the block is 314326.
When I took the distributor in to get new cap they said it is from a 240sx US model but could not get the year down. I tried the Nissan dealers in Quebec but no help either. FR Sports has a pulley set for 94 and up motors but I think mine is before that.
Any help finding the year would be great or a place that has a pre 94 pulley set would do also.
thank you.

[Livinstrong]

S13 Block Casting Numbers:
CED31,SBD31
S14 Block Casting Numbers:
CED31L,SBD31L

This might be a little easier, apparently the valve covers between an S13 and S14 are different, might allow you to identify what generation motor you have.
S13 Top S14 bottom
http://farm4.static.flickr.com/3414/3328753664_994d72ce2d_b.jpg

[SolTNtuz]

I have a S-13.
Pulley problem was solved over the weekend ( had to reverse and cut power steering pump pulley in half and also reverse bushing on bracket, now alignment is good ) and dyno next week, hoping for 350 RWHP :)

Thank you very much for the info.