I actually carried my old one into my local napa and rumaged their preformed radiator hose stash that where defective fron vendor and walked out paying like 5 bucks for a piece that was very close to what i needed on my 81 k20 lb 20 gallon
When i mounted my tow bar i bolted a 3x3 piece of angle iron to bottom of my frame rails using exitsting holes and grade 8 3/4 diameter bolts and bolted the tow bar to the angle iron
I used a harbor freight special tow bar to haul my 98 k1500 1000 miles beind a Uhaul truck when i moved truck had a lawn mower in the bed and cab loades with parts and tools and had no issie and went through the amokey mountains with it
Ran a 350 and a 400 in same truck two different plow seasons the 400 was way better with better low end torque number for long pushes of heavy wet snow in my 81 k20 long box with sm465 11"dual friction clutch np208 and 4.10s running 33s in granny 4 4lo it creeped at 1.5 mph but it had plenty of...
My dad wired his truck for both he added a 2 receiver sleeve to front plow mount and uses plow cables and separte solenoid to operate the winch and ran secondary set of wires to rear and mounted winch on receiver bracket
i have an h4 conversation kit plus relays since i plow with my square im running 4 relays two control truck lights and other two are on a separate switch that activates plow lights and cuts truck lights
i have a si style alternator in my 81 and used an adapter i found on ebay that goes from the si plug on alternator to the cs plug on harness to run bolt gauge has built in resistor
i have an 81 k20 but it has a 14 bolt semi float best way to tell if semi or full is look at center of axles from wheels if its flat with rim its semi and if it sticks out 6 inches its full
81 k20 with sbc 400 sm465 and 4.10 gears
i drive my 81 k29 with above combo at 75 on interstate all the time average 11 mpg in dry conditions and minimum wind