I'm not going to argue with you, its not my place. I'm not experienced with these tractors as I've only owned this for a couple months. The only thing I'm going to note here is that I've got you, telling me to stick with the 160 degree thermostat, vs about 5 people from here and a different forum telling me to go with the 180 degree unit. Not really sure who to believe at this point
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'70 107 with k301 engine swap
'71 106 with 38" deck
'70 147
R with factory replacement k321, 42" deck
'61 Original with 38" timed deck
'63 70 "pinkie"
1863 with 54" deck
'46 Farmall H, '50 Farmall Cub
105 x2 (parts)