THANK YOU.....(clears throat) thank you mac for your kind words.
A 79 could have come equipped with a 302, 351m, 400m, or a 460. The latter three would have the C6 behind them, best automatic ever made in my opinion. The f150 will have a D44 front if its a 4x4 and/or a 9 inch rear. Common gear ratios are 3.55 or 3.73, limit slips are sometimes found. If you could PM me the VIN and all the code information from the door tag and what it corresponds to, i could tell you almost anything about it. Check for front locking hubs if its a 4x4, if it has locking hubs, and they are factory ford units, you most likely have an NP205 transfer case. If you have an auto locking type hub, you have an NP203 case, but some people traded those style hubs for manual lockers to save on gas mileage.