mounts for that swap use the 2.8 rubber mts and a plate that bolts to the motor. those are about 80 bucks, i have a motor with 500 miles on it out of my blazer if u want a fun motor with some power 350" stock bearing sizes and bore, great lil motor but its 12.5:1, jegs hyd cam, ported double humps, new bearings, rings, and hone, about 1200 in parts and labor to do the motor work. id sell the whole engine for 1000 and if you need less compression id help to find a flat top and install it to drop compression down to 10:1 or so.
http://i33.photobucket.com/albums/d71/Mattsv8_03/89%20blazer%20project%20blaze/SSPX4117.jpg
http://i33.photobucket.com/albums/d71/Mattsv8_03/89%20blazer%20project%20blaze/SSPX4114.jpg
http://i33.photobucket.com/albums/d71/Mattsv8_03/89%20blazer%20project%20blaze/SSPX4124.jpg
http://i33.photobucket.com/albums/d71/Mattsv8_03/89%20blazer%20project%20blaze/SSPX4095.jpg
have much more info if you are interested,
id have to say total cost of a swap for a v8 s10 proably about 3000. if you can find the parts cheap enuf.