Awhile ago I posted pics of the 1370 which we own. Several guys noted a few items on the tractor not normally seen and requested a better view and explanation as to why this was done. Those items were engine intake and cooling air, single side mounted battery and extended front axle. I will explain the air system tonite. Here in SW MN we encountered terrible problems with 13's sucking corn leaves in the radiator area and up into the air induction system. Attempts at sealing the hood never solved the problem. Case had a good idea on the 15's by running all engine combustion air through a hood mounted prescreen, this eliminated corn leaves in the air induction. That idea was simply retrofitted to the 13's by putting a 6 in. rubber elbow on the front of the air induction, cutting a hole in the hood and installed the 15 prescreen in the elbow. Problem solved, I would guess this was installed on over 90% of the 13's in this area. A idea that lessened the problem of leaves and chaff in the radiator was to install a 15 upper grillin the 13's and taking the orriginal flat 13 grill and install it on the top of the hood helped alot.This gave the cooling air more surface area to enter and greatly reduced the amount of chaff and leaves getting pulled in. We did not do this to alot of tractors,but it's benefits were well worth the expense if cooling was a problem. Rod.