93-95 Hatchback

http://www.hmotorsonline.com/shop/sc...age&item=30005
$3200
http://www.hmotorsonline.com/shop/sc...age&item=30020
$1700
What's the difference here.....which one these would I be looking at getting to throw in a 93-95 hatchback...
http://www.osakajdmmotors.com/honda/b18c1/index.html
$2700
Now does the one from osaka not include something...just that much better of a price....or is the $1700 suffice to do the job that I'm wanting to do....how much extra would it be to take it to get port and polished while the engine is still out? I'm trying to figure all this out for before i get the car and wanna have it done....i like planning ahead.
92-95 hatchbacks......had an SI....would can I do with this motor? which motor is it exactly again? I really like the idea of dropping in the GSR motor though.....help me out