Looking good! 48's come out about the mid 80's 102" wide shortly after and then 53's in the late 80's. 42'6" trailer were common in the 70's. Monfort ran 39'6" reefers with their w 900's to be legal in the east.
As far as the Cummins goes the PT series "power torque" were lime green and I believe some custom rated Cummins were also. The Detroit appears to have a red block "International" an alpine green head and a Terex green valve cover and coolant hose neck and other small parts.
No cut out for the sleeper as they were crawl through in those days. The kit with the brown truck is the same exact kit with the sleeper and visor added. As a side note the earliest releases of the Ca. hauler had green tinted windows.
Ok correct info here. The AMT c series engine is the 534sd which physicaly is the same as the 401 and 477.The 401,477 and 534 was available in many Ford trucks of all sizes and axle configurations. The engine in AMT's Louisville kits is the Cat 1160 a forerunner to the 3208 they look similar but are not the same engine. As far as smaller gas engines go no fe series engine was put in a Ford truck bigger than a half ton. However the ft series engine (truck version of the fe) were.The ft had lower compression forged steel crank and 4 ring pistons etc for truck use. Some ft's also were put in 1/2 pu's and all 3/4 and 1 ton's. Ft's came in 331 359(U haul only) 361 and 391. The Ford c over the years had dozens of engine options from the 240 straight six gas to the Cummins c160. By the way both AMT's c and Louisville have an allison auto for a transmission.
Over all pretty good kit considering its been around close to 45 years. Was top of the line back then. Wheelbase is a little short for a sleeper but conventionals with sleepers back then were as short as possible due to length laws. My first hood was a Peterbilt 359 had a 36" bunk on a 204" wheelbase. Not much room for trailer swing. Again considering its age a very nice kit.