Nice looking car man!
How much did you pay for it? How many miles? The engine bay looks super clean.
Are you more for looks or speed? If you want speed, then you should either rebuild the KA or swap in the SR. You can go N/A if you want but you won't be getting that much power.
Here's my 240
http://www.imagestation.com/album/?id=4291220285
Have fun with your new car, your going to love it