Nice truck Brian. I had several of the '60-'66 LCF trucks, a few years ago. A '60 L80 roadtractor,348ci. V8, 5 spd. trans., 2 spd. elect. shift rear axle, & full air brakes, '64 L60H, equipment hauler, repowered with a small block 350 V8, 5 spd. trans., 2 spd. elect. shift rear axle, with air over hyd. brakes, & a '65 L80 Holmes Wrecker, 409ci. V8, 5 spd. trans., 2 spd. elect. shift rear axle, & full air brakes. The '64's were available, with a 292 6, 327 small block 8, or 348, & 409 Big Block 8. Check out my old trucks here, along with a few others.
http://classiccoe.com/oldcoetrucks/6066.htm