DOG:
not sure if you will see this or not?
anyhow I have a similar unit, there were many options on these and prices was like sait 1600~2400 depending.
I have a 46" cut with the 20hp BS Intek engine which has pressure oil feed, it is a MURRY unit and has held up reasonably well. I had a blade installed wrong by them (bought it when Quality Farm & Fleet went out of buisness for 1299 I think and had orriginal 2100 price.) the blade was bolted down ofset form the spindel carrier and I had to replace the spindel due to a bearing failure. Other than that I have probably 500 hrs on her in 3 yrs as I mow about 2~4 acres. it has 5 speeds and a quick level deck with 6 settings for height.... let me know if it is similar I can give you info if need be.
MarkM