Hi, My name is Chuck Moritz, I was associated with garden tractor pulling here in Nebraska up to 5 yrs ago when I went racing.I guess I was in it almost from the beginning of the concept so I've think I seen about every build that could be put together! Starting out pulling is a sport that the first thing you do before anything is understand weight transfer of the tractor and the balance this does not take a lot of bucks to understand but understand it, first before putting a puller together!
Once you have a feel for that then you can make soild choices of how to build.
Pulling is hard on a tractor so the basic start is strength of the chassis .
Cubic Inch is big but before you can make it pull everything behind the engine to the
rearend needs to be equal in strength.Also your gear Ratios are huge plus when it
comes to this,Tires are King also if you don't have the correct tires or have them cut like competion lot people got frustrated and quit.I've seen your type of mower pull few years back and it would be design for a light weight class say 600-800# and depending on your rearend thats ify . Here that would like be stock class or a altered stock it depends on where you pull all states have different rules but are fairly close.
If you put some pics up and show me what your engine is rearend drive system
tires,etc different angles of pics I sure could help you out! To get off to a good start.
And save you some cash!!
Thanks
Chuck Moritz
p.s. I'll take a few pics and show you what i've done in the past.