columbus diesel is a BA place to get parts. im looking at alot of parts for my 1570.
I pull field stock/farm class. Just have your fuel pump flow tested, and have them turn it up some. When your pulling take your air filter out and try to make the intake as restriction free as possible. Then grab a good straight pipe.
Its hard to make a puller and a hay tractor. your going to put that tractor into a dusty life, then pull it. when you start opening the intake and stuff your going to have to be able to seal it back up good or that hay dust will tear into it. just went thru that on my 4450....