I highly recommend the 185 his what I use to have in my car before I had to sell due to a baby at the time.
306 Mexican Block with 9.5 to 1 compression forged pistons with AFR 185 aluminum Heads, Harland Sharp 1.7 Roller Rockers, XE 266 comp cam, 1 5/8 Mac headers, Mac CAI, MSD Blaster coil...