Amazingblue. That waz ah typo on the 12V9 thing. my pecker finger hit the (2) and I never looked back to see if it waz there and didn't proof the post. Sorry 'bout that. Az for that 12 cylinder "Horse" Two slight problemz in todayz world however. 1st waz that at .25 per gallon and 2 1/2 to 3 MPG it were no problem BUT me thinkest those dayz are behind us. 2nd waz like all two cycle Detroit's they marked their territory VERY WELL, almost to the point of leaving ah trail. You could alwayz tell where a Detroit powered tractor had set ah spell in ah truck stop or customerz lot by the size of the black spot on the ground! The hep driverz out there back then alwayz carried ah few extra gallons of Rotella and would and did (after an oil change) fire up and let it idle, pull the dip stick and with a 3 cornered file put a 2nd mark on the stick where the oil level showed when it waz running. After that winter or summer you could pull the stick and know if you needed to add without even shutting down and 'specially in the cold monthz there were weekz on end where you never did shut down, but that'z another story. And az for top speed, their are a few variables that play into that too. Transmissions, rear gear ratios, and in the bygone dayz the size of the "button" in the governor and today the complexities of the electronics can still be tweaked. everything waz and still iz a trade off tho' but the easy answer iz that $ solvez most all problems. OH, And if you're serious I'd chose and Allison automatic transmission for you application regardless of which horse you chose to move your new home with. Your total weight will still be less then Half the gross weight limits. Why would you wanna spend time building your right arm and left leg muscle? And ah little FYI that I'm aware of only 'cuz I waz out there then. Their waz and probably still iz ah meat haulin' outfit domiciled in San Antonio with an old Diamond-T with a 12V92 between the railz that I think had ah 2 stick spicer 20 spd. behind it and I never heard how the twin screw waz geared. That the last time they turned it loose on east bound I-10 grossed out at 72,380 which waz the legal max back then, the driver got just about to Orange(not far from the Louisiana line) when he ran up an ah road block. They estimated hiz speed at ah bit north of 128 1/2. The company had to have it towed and then loaded on a rail car to get it home and az the story that surfaced waz told that if it ever left their property again it would be another fine more then the speeding ticket waz this time, then confiscated and destroyed. That waz in 1978 if my memory bankz are still workin'. Jer....Sorry for the book