Me personally, I would go CRVTEC.....no replacement for displacement. There are several places you can send your block out to to get built or you can try to find a place in WY. I am lucky to have a reputable place near my house that I can drop the block off at when I get all the parts for my CRVTEC (and another car so I don't have to worry about turn around time. LSVTEC is a decent choice as well, but I want to make as much power as possible. A fully built CRVTEC is a beast, anywhere from 200whp to 250whp all motor is what I've seen depending on tuning, engine management(hondata, etc), and other stuff. In a del sol, that should be good for mid 12s pass easy.
It would probably be cheaper to buy a fully assembled block because labor is going to cost a lot, more than a $1000 to fully build a CRVTEC properly and most likely more than that, plus shipping (there and back). I plan on spending about $5000-6000 on the motor alone over about a year and half time, give or take and I'm sure I'll change my mind again down the road again soon.