1220 Cub Cadet Hydro Blown engine
 

Great machine with 38" Mower deck and grass catcher on the back. Engine blew just after i filled the oil, was low but not out.. Engine totally seized. What is best course...small engine repair...or rebuilt.
Can't seem to find the Briggs/Stratton in it now.
12 HP I/C syncho-balanced..cast iron bore

Model 281707
Type 0134
Code 88021011
SN K-484498

Much Obliged,
Docrocky

I'd look for a used engine on C-List or maybe a used tractor like you have with a bad trans.

Here are 2 B&S engines for sale in my area.
http://hickory.craigslist.org/grd/4509600780.html
http://tricities.craigslist.org/grd/4546605289.html

You may also consider looking for a running later tractor.