i've done a couple recently. seems to me the S & P kit for the 113 is in the 300 to 325 range. my parts guy is RCS Diesel Services in Ludlow, Mass. 888-590-9992, ask for Mike in parts - tell him i sent you. drop shipped to your door. tear it down first to see what bearings you need, crank, valves, and head condition, etc. so you can order everything at once.
i think the last one i did (SA) was about $750 in parts and machine work. crank polished, 8 hardened seats (the valves were beat too badly to grind), deck the head, new valves and springs, bearings, S&P kit.
the kit you get may not have any lead-in on the sleeves, you might have to make a lead in tool out of one of the old sleeves. http://www.farmallcub.com/phpBB2/viewtopic.php?f=13&t=53998