straight truck to tractor, gone full retard

alright laugh if you must it is all good. I can not find any threads on taking a straight truck that does not have a bed or a box on it and turning it into a tractor. I have read about Glider kits, i have read about turning tractors into flat beds or box trucks, but not the reverse.

The reason i want to find information on this is because i want an older Mack with a 200-218 wheel base straight truck no bed or box( They are cheaper) cut the excess off the back, place a fifth wheel and a sleeper. I just need a set of guide lines to follow so i don't F it up.

Thanks for letting me be the entertainment for the night.

 

Okay so from what you two are saying, not a logical option. Here is what i want but can't find, a 70's to early 90's model Mack tractor with a sleeper. Now i can't find any with a sleeper, maybe i am just not looking in the right spot. Now i can find Mack tri-axle straight trucks for 3 grand, put 5-6 into it and have a decent running truck, may not look pretty but i was never about looks.

Second question for you, i will do my research on it as well, but what are the requirements for safety regulations for stretching the frame of a tractor to put it at 200-220in. I can find single cabs with short wheel base not enough room to put a sleeper on. Ill be running a flat bed with a headache rack if that makes a difference on anything.

Thank you for the answers again.