redoing my 72. MY front heater is dented and rusty. I need a new one for restoration. MINE has the knob coming out the lower left side of the heater. the front is smooth. THE ONLY ONES I CAN FIND have the knob coming out the front middle of the heater with the long slot running down the face. my problem is i have found a few for sale with the middle knob. i have not found the type in my 72 now. did someone switch the front heater at some time? or will the other style bolt right in place of mine? i cant post pics of what i had, the heater is long gone. please help me with my questions. if you have pics they will help. if you know of a nice front heater for sale with the side mounted knob let me know. im new to this and working on this together with my son who is a recovering addict. it clears his head and keeps him focused. everyone has a Jeep he says.....i want to be different.