Diego-

My brother-in-law put a 350 in his S-10 Blazer with the help of Jags That Run (V8 conversions for S-10\'s) . These pages have good photos and lots of technical help including changes necessary if you live in a smog-regulated state like CA. Take a long look there for mounting info and some great space-saving components (e.g. oil pans). You can disregard all of the info on changing the S-10.

Keep us posted. cool