HAHAHA red headed step child.. the sohc really isn't that bad.. what makes them 'shitty' is the fact that they're the oldest s13 engine and also that they were only made in bulk in north america for 2 years for the s13. that means that these engines wouldn't be taken care of as well as the newer dohc kas.. there have been some pretty impressive ka24e-t setups.. nico and zilvia have guys that run ka24e-t engines.. just don't discount the E..
i know very little about 240sx headers but 2.5-3" will do, its all up to you.. different sizes will give you power in different rpm ranges and will also produce different sounds..
and i'll have to go along with slidestar's naivete (just kiddin) and say that the sr20de wouldn't be a good idea.. the 240 is known for its large amount of displacement for a 4 banger, rwd and hicas.. don't downgrade to a smaller engine.. you'll have a little more potential with a ka, whether it be dohc or sohc.
congrats on the tools too! i got a shitload of craftsman tools for christmas which is gonna motivate me to get my hands dirty.. that and spend money on more tools. thats the ONLY problem with them.. you can never have enough tools haha
in conclusion to my novel, i have to say that cory's video makes you think what it would possibly be like to sit in his seat and i think it would be amazing. he's got a very reliable setup, which just happens to be really fast
i don't have it anymore but someone should post the ka-t video.. i don't even remember who it was from.. i think it was from ka-t.org.. wait, i'm gonna look for it..
k couldn't find it but if someone could post it that would be great. its an amazing video of s13s and s14s and all the combinations within, powered by the ka (both e and de)