Andy, you can bolt them on but you will need to buy a set of step dowels from your favorite AMC parts vendor, if you want to use the smaller 7/16" head bolts. If you want to use the more desirable 1/2" head bolts used on 70 and up V-8's you will need to have the head bolt holes in the block drilled and tapped. Todd MN -----Original Message----- From: raysinvegas@xxxxxxxxxxxxx [mailto:raysinvegas@xxxxxxxxxxxxx] Sent: Thursday, April 14, 2005 7:56 PM To: mail@xxxxxxxxxxxx Subject: 401 heads on a 343 block? Hi, can I put '75 401 heads on my '68 343 short block? Thanks in advance! Andy Ray 64 440H (2) 68 Jav SST 343 ============================================================= Posted by wixList Archiver -- http://www.amxfiles.com/wixlist